"Nemanja reminds me of Steve Bruce in the sense he always asks a question of defenders," said Ferguson.
"He wants to know whether they have the courage to put their head in front of his.
"There is no question he can play, there is not a doubt about it. But he doesn't mess about in terms of clearing the ball. He acts like a defender.
"He got me five goals last season and has already got one this year," said Ferguson.
"I think he can easily get between five and 10 because he has got just the right qualities."