Henrik Larsson trained with Manchester United for the first time on Monday ahead of the striker's loan move to Old Trafford on January 1.
The veteran former Sweden international flew to England on Saturday before travelling with the squad to watch his new team-mates in action against West Ham at Upton Park on Sunday.
Larsson will spend a week training with United at their Carrington base before returning to Sweden to be with his family over Christmas.
The 35-year-old former Barcelona and Celtic striker will then return in January on a two-and-a-half month loan deal from Helsingborgs.
Larsson will be available for up to 14 games during his loan spell, which ends on March 12.
Last month, United manager Sir Alex Ferguson hailed the surprise move as a superb piece of business by the Premiership leaders.
"Henrik has great pedigree and character. He also has goalscoring ability and can change games - we're very pleased," said Ferguson. "He's a goal scorer. He can play anywhere on the front line.
"I am really happy we have got him. I would have liked to have signed him long ago but I knew he wanted to go to Barcelona and then he went home."