He has to lose 35-40 kgs before he can play the younger version of the wrestler, it's an uphill task but Aamir is up to it.
Aamir is using this opportunity to spend some quality time with his son, Junaid who is presently in the City of Angles, studying film making at the Los Angeles Film School and Aamir has been keeping his 21-year old son company.
He was supposed to be there till the end of the month but will have to cut short his trip and return in six days.
His mother (Zeenat Hussain) is in her 80s now and wants Aamir who turns 51 on March 14 by her side on his birthday.
The doting son has promised her that he will be back before the celebratory Monday.