Manchester United new signing Robin van Persie will wear the No. 20 shirt this season.
Van Persie completed his £24million move from Arsenal on Friday, signing a four-year deal with the Red Devils.
The 29-year-old has been handed the number 20 shirt which was vacant following Fabio's loan move to QPR.
"It's an honour to sign for Manchester United," said Van Persie on Friday afternoon.
"I am looking forward to following in the footsteps of so many great strikers, bringing my experience and playing my part to help the team compete for the biggest trophies in the game. I can't wait to get started."
Manchester United manager Sir Alex Ferguson said of his new signing: "The boy wanted to come. He turned down various clubs. If he hadn't told Arsenal he wanted to go to Manchester United, the transfer wouldn't have happened.
"Robin is a world-class striker with a proven record in England and in European football.
"His talents need no introduction to our fans. He has scored a number of goals against us in some classic battles with his former club. His movement, finishing and all-round ability are outstanding.
"We never thought we could get Van Persie. If you go back six months ago, I couldn't see us getting him.
"I thought Arsenal are not going to let him go. When I read he had refused a new contract, that is when we acted. It has been a long haul."
United's other new signings, Nick Powell and Shinji Kagawa, have been given the No. 25 and No. 26 shirts for the 2012-13 campaign.