I don't know if you were a lurker here before but if you were you might remember Junaids saying Misbah was going to be a flop in England.He ended up as Man of the Series.
[MENTION=132916]Junaids[/MENTION] is a big fan of youngsters being in the squad.He still likes Umar Akmal and wants him in tests.
As for the OP,I would want Asghar given a go. No more Zulfi chacha.
I genuinely mean no offence, but you are making the same mistake of excessive deference to age.
Misbah-ul-Haq was a sentimental choice as Man of the Series in England. But what actually happened was that he scored a century at the beginning against an attack missing Anderson and Stokes, and then had scores of:
0, 52, 35, 56, 10, 15
In other words, in 3 of the 7 innings he put his team in trouble.
As for Yasir Shah, the bottom line is that he has not reached the level I hoped, and now Shadab Khan needs to get the intensive exposure to Mushtaq Ahmed that he got.
This is Yasir's record in his 5 Test series in the last year:
In England: 19 wickets at an average of 40.73
Home v West Indies: 21 wickets at an average of 26.85
In New Zealand: 0 wickets for 61
In Australia: 8 wickets at an average of 84.00
In West Indies: 25 wickets at an average of 21.96
Pakistan's next two big challenges are a spring series on soft, seaming wickets in England next May, followed six months later by a series in Australia-like conditions in South Africa.
Yasir Shah is already 31 years old, and clearly will be a liability in both series.
Even if Shadab Khan doesn't develop to become a bowler any better than Shahid Afridi, at least if he is groomed properly he can average 25 with the bat in those series and support the quick bowlers.
Whereas with Yasir Shah, Misbah overbowled him in such conditions and destroyed his own attack.
The two big series next year require 4 quick bowlers per Test. The more a spinner bowls, the less rest the quick bowlers get between overs.
Shadab needs to be developed. Yasir Shah hasn't reached his potential. He hardly spins his leg-break, his googly is non-existent, and he has no flipper. His only real strength is exceptional accuracy.