Romelu Lukaku has completed his move from Everton to Manchester United after signing a five-year contract.
“Romelu is a natural fit for Manchester United,” Mourinho said in a statement. “He is a big personality and a big player. It is only natural that he wants to develop his career at the biggest club.
“He will be a great addition to the group and I know they will make him very welcome. I am really looking forward to working with him again.”
He scored 25 Premier League goals last season and was only beaten to the Golden Boot by Tottenham Hotspur’s Harry Kane.
“I would like to start by thanking Everton and the fans for the last four wonderful seasons, I have made some special friends and we have shared some amazing moments,” Lukaku said.
“However, when Manchester United and Jose Mourinho come knocking at the door, it is an opportunity of a lifetime and one that I could not turn down. You could see the fight, determination and the spirit in this team during the Europa League final and I want to become a part of that.
“I cannot wait to run out at Old Trafford in front of 75,000 fans, but before that preseason is where the hard work starts, and I am looking forward to that first training session.”