Rio Ferdinand admits he questioned why Manchester United signed Odion Ighalo when the transfer was announced in January.
But the former Red Devils centre-back says he's completely changed his mind on the forward following his impressive start at Old Trafford.
Ighalo has netted four in his opening eight Manchester United fixtures, with five of these appearances coming off the bench.
And six-time Premier League winner Ferdinand believes his presence at the club will come as a huge boost for other stars, including striker Marcus Rashford.
"Eight games, three starts, four goals and one assist. All you people saying 'What are we doing signing him?’ I was one of them, I have to admit it," said Ferdinand.
"He's proved us all wrong. It's refreshing to see someone like a supporter, he looks delighted to be there, like he's saying thank you every day to Ole.
"This boy looks like he's happy to be there, and whatever he's told to do he will do to the best of his ability.
"It's shocked me to see what he's done, and he hasn't turned them into world beaters but they needed something and he's brought it.
"Rashford will appreciate playing with someone like this when he's fit again. He's got something different to all the other guys in the team.
"He's something different if it's not going our way in games. He has affected games every time he's come on the pitch, that's what I like."
