Firstly, Rooney would fit in the team, because if hes there you would have to accommodate him by shifting Silva to the left or right.
No, that is your delusion. He might still be a superstar for you but he is no longer the player he once was. Moving the best CAM in the PL to the right just accommodate a past it Rooney when he is not as good as him in this position is not the best idea in the world. Your captain and talisman is not good enough to start for Man City, simply because Man City has the best ST and CAM in the PL, and those are the only two positions Rooney can fit in.
Rooney will still walk into every other PL XI.
Secondy, Toure is only in on current form otherwise he wouldnt be here either and then you can only be a waste man if you think Fernandinho would be picked ahead of any of Carrick, Bastian or Schneiderlin. Yes Carrick and Bastian have aged but still they are far far better than Fernandinho.
Yaya Toure is a true box-to-box midfielder with endless energy, and Man City will look at someone like Pogba to replace him. Similarly, Fernandinho is more dynamic than Carrick, Bastian and Morgan S. His attacking contribution has been very good, and the names you mentioned might be better than him but they do not fit into the current setup of Man City; to accommodate any of them, City will have to change their playing style and tactics drastically, and it might not work. There is a reason why they didn't show any interest in signing Bastian and Morgan S, and if you offer them Carrick they'll probably turn him down, so no they won't walk into the playing XI of Man City as you think.
As for Mata, if Debryne does do well, you would have to put Mata on the other side because only an idiot will pick Sterling ahead of him.
Mata is a lovely footballer, my favorite in Man United at the moment, but he is a central player and that is where he's at his best; he has played out wide many times but he does not have the pace, energy and movement for those positions. His passing and vision is excellent and they are better utilized in the middle.
KDB on the other hand is a better dribbler, quicker and more combative. Time will tell if he's a better footballer than Mata, but he's certainly a better option out wide.
As for Depay you are only assessing him on 5 games, (its obvious you havnt seen him before), the talent is there and he is just adjusting to the EPL, He has already done better at PSV than what Sanchez did at Udinese and was no better when he was 21, so try and speak with some logic next time rather then hate.
You are the only one showing irrational hate here with your comments about Sterling. Depay is a very good talent who has been great for PSV, but he has shown nothing yet to suggest that he is anything more than an inferior version of Alexis. I will call him that until he proves that he is superior.
Different players progress at different levels, you just cannot compare two players on how they were at the same age.
Pedro at 21-22 looked like a world beater who should now have been in the top 5 players in the world, but he didn't progress as expected and never lived up to the original hype. Time will tell if Depay will go on to become a top player or fail to live to expectations. You shouldn't take offense when nothing has been proven yet.
As for calling Sterling proven i dont know how you have come to that conclusion, as Martial already has slightly better stats then him for last season at Monaco and they played the same number of game. Maybe you read too much of Daily Mail.
I actually watch football, and not buy into the Man United hype machine where every player is the next XYZ. No player at 20 is 'proven' in the sense you're using the word; he's a proven talent at this level but he has a long way to go before he can be considered a top class player, but to say that City overpaid for him when you bough Martial yourself is a very deep exhibition of hypocrisy.
There is no logic in comparing stats across different leagues in different systems. There is no substitute to watching football; watch Sterling play a few times rather than looking at his numbers and you will see that is not just English media hype. He's a 20 year old footballer with great potential and ability, and if he works hard he can go on to become a heck of a player.
Yes he underperformed last year but Liverpool lost the best ST in the world and Sturridge barely played, along with Balotelli proving to be a miserable flop. All these need to be factored in.
Again you should not take offense to someone suggesting that you should not criticize Man City for paying so much for him when you yourself paid a fortune for Martial based on the same thing that City did - 'potential' and future investment. Martial might go on to become the next Thierry Henry and Sterling might fail completely as no one can see the future, but to say that he will replace Sterling after one good performance vs. Liverpool and is a future great is beyond absurd.
As for hating, i dont base my opinions on hate like you, i support football and will appreciate great football when its played which i do, e.g Courtinho, Aguero, Silva, Kompany. But one thing is CRYSTAL CLEAR Sterling is an average footballer who only has pace and thats it. I bet you he wouldn't even be in your starting 11 in a few months time.
And you assumed that I support Man City just because I highlighted your double standards for mocking his fee when you paid so much for Martial for the exact same thing. I actually support Arsenal and have no liking for Man City in any way, but I am not afraid of calling a spade what it is, a spade, yet you accuse me of not appreciating good football lol, when you yourself are so biased.
Sterling will be in Man City's lineup for years to come.
...and Young has been average for a few years but right now he is playing the best football of his life and is in good form.
And he is not getting into Man City's XI.
As for comparing Martial to players like Macheda, Welbeck, Hernandez, Januzaj, then you dont know what your talking about. Martial was already known as a top talented and a future great prospect, he was on the radar for all major clubs, apparently Mourinho put in a similar offer as us for him. Which is different to all other players because they were not heard of before they made there debuts here and then yes like all clubs and supporters we hype our players like all supporters do. Unfortunatly a city fan will never understand that as you hardly have any home grown players and your academy has been a joke for decades.
Another assumption that I'm a Man City fan

, says it all thats needs to be said about your mentality and comprehension skills. Where did I exhibit support for Man City? all I'm saying is that Sterling is not a crap player as you make him look to be and they look favorites for the title. How does that equate to 'supporting' Man City. Logic: how does it work?
Again, you are lacking perspective here. Welbeck is a home-grown player who started his career at a big club like Man United. Remember 17 year old Welbeck's goal on PL debut vs. Stoke? Now imagine had he scored that for a Stoke or Hull in the PL, the big PL teams would all have lined up for him. Similarly, Januzaj was an unknown quantity when he came to Man United but he made a great early impression and looked like a future star. When he was reluctant to sign that contract, a lot of clubs were lining up for him. Just because he didn't live up to your usual hype machine does not mean that you revise history.
Similarly, the likes of Macheda made their name in Man United, rather than at some foreign club, and thus big teams were not lining up for them.
Imagine if someone like Wilshere wasn't at Arsenal, but Fulham. Don't you reckon the likes of Man United, Chelsea, Man City etc. would be in for him? Of course the will be, look at how Man United and Arsenal fought for Ramsey.
The point is that if a young player makes a good impression at a lowly team OR a foreign club that is in a weak league and cannot hold on to its talented players from moving on to more prestigious leagues and teams, he will always draw the attention of the big clubs more than a player who is already at a big club.
Buying a player from Monaco is much easier than buying one from Man United. Martial might be a better talent than all of them but to say that Chelsea etc. were interested in him does not mean anything.
As for winning the season, its a bit to earlier for that so hold your pants kids, we will come back to that in May unless you havnt run off in embarrassment.
Fail assumption #3.
Don't worry, we will get back to this in May. I will leave you to your devices now, and you can continue to imagine that only 3-4 Man City players will get into the Man United and 7-8 of your players are good enough to start for them. All of this will mean nothing of course if Man City finish above Man United and might possibly win the league as well. Mind you, triumphing in Manchester derbies means nothing; any team can lose to any other team in the league on any given day, but do Man United have the quality to attain more points than Man City after 38 games? I don't think so.
We will get back to this in May, no point in bickering over it now with the whole season still left to play, but I am sure you'll have your excuses ready.