The Red Devils finally completed the deal for the Portuguese midfielder with Sporting CP.
He will add to their options in central midfield, while he can also play as a number ten in attack.
Ferdinand mentioned that he spoke with the likes of Ronaldo and Nani, who had very good things to say about Bruno.
"I've spoken to a few of his teammates at national level and club level," Ferdinand said on his Youtube channel FIVE.
"Nani, my old teammate, says he's a fantastic player, says he's perfect for England. Says he's got all the tools, all the right attributes.
"Cristiano said he's fantastic, creates chances for him. He can manipulate the ball, take the ball, confident.
"These are the type of things that you want to hear when Manchester United are signing a player. So fans, based on what I've heard about him and what I've seen, I'm hopeful and confident that this guy can go out there and do the job."