"I wouldn’t put him in the top bracket yet because he hasn’t done it in a top league," Ferdinand said on TNT Sports. "With all due respect to the Portuguese league, it is a very good league, but it’s not one of the top leagues. If he signs for a team in the Premier League, he’ll be having to prove who he is. He’ll have to reshape himself and say 'this is me’, presenting himself to everybody under that spotlight and then going ‘right, this is who I am.’"
Ferdinand also believes Gyokeres would be excited at the opportunity to join United, where he will become the "star" of Amorim's rebuild.
"If he wants to win, he goes to Manchester United... no, I’m joking! The key point is that he knows the manager," the former centre-back added. "For a transition into another league, to go with somebody that knows your game perfectly and will actually be able to get the best out of you - he’s proved he can do that somewhere else. And you’re going to go somewhere where he’s rebuilding, and you can be the star of that process with him. I think he’ll be licking his lips at something like that."