Ajay Devgn just transforms himself into the characters he essays on-screen, says "Badhaai Ho" director Amit Sharma, who is working with the actor in a sports biopic on the former Indian football coach Syed Abdul Rahim.

On working with Ajay, Sharma told IANS here: "As an actor, Ajay always transforms himself into the character that he plays. That's how he always proves his versatility. As a filmmaker, I have heard so much about Rahim saab and I have done the research work also.