Its very hard to maintain same class with bowling action changed. Bolwers have a bowling action that they carry with them since they bowl first delivery of there life. We saw Saeed Ajmal got reported and after his action was cleared he couldn't maintain his original form. In countries like Pakistan bowling action are reported only once you are in international cricket before that in first class there is no check.
No doubt it's very hard for anyone to do this but keep one thing in mind age factor is still with this wonder kid, and he can do things even it's going to take some time because it's not all over for him PCB is doing some good work. Surely one poor thing is happening in Pakistan they are not doing any good and authentic work for checking these guys before their International entry, so it's hurting many guys hopefully in near future we will have some good changes in this way as well because now things are changing in positive way very quickly for them and after successful PSL and Australian tour they are feeling some healthy in financial sector which was concern for them in the past.
If we have some not wholesale changes in near then surely PCB could be on track for these young guys, and they will lead from front for their country in this fast bowling.
I know that he is not old but the problem is when you have to change your bowling action with a natural way to do something is taken away from you and that is not helpful. It obviously takes time to get used to a new action for anyone. We have seen Shane Warne having to change the bowling action because of his injury and after that, he was not as effective.
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Well.. I agree. In most of the Asian countries, the bowling action for domestic players is not under close scrutiny. Only if they play in franchise T20 cricket or international matches, the suspect bowling action is reported. Nowadays the technology has progressed a lot, and many of the domestic matches are being broadcasted or streamed live. Now this increases the chance of suspect action getting noticed by the match officials. Now coming to Hasnain, chances are low that he will be able to perform at his previous level. But let's be hopeful.
The best thing about this kid is he has time on his side. He is not old and has a lot of time to improve. But the problem is if he does not perform at his previous level he might just get overlooked, which can be detrimental to any player in his career.