Derby boss Wayne Rooney is happy seeing Cristiano Ronaldo return to Manchester United.

Rooney and Ronaldo spent four years together at Ronaldo, and won the Champions League together in 2008.

And he has told talkSPORT: "For the fans it will be great to see Cristiano back, it's very exciting for everyone at the club,

"And for his teammates, too, for some of those young lads in the dressing room, Mason Greenwood, Marcus Rashford, some of these young lads who have grown up watching him play at Old Trafford.

"For them it would be a massive help, I'm sure. He'll bring his mentality to the club.

"He's still one of the best players in the world, so I think it's a very good signing."