Manchester United have completed the signing of Argentina defender Gabriel Heinze from Paris St Germain for £6.9m.
The 26-year-old, United's second summer buy after the £7m capture of Alan Smith from Leeds, has signed a five-year contract at Old Trafford.
"I'm extremely proud to sign for such a great club," said Heinze.
"It's a very important step in my football career to join United and I have faith and great belief that I can meet the high expectations required."
Sir Alex Ferguson believes Heinze will be "a great
acquisition" for the club because of his versatility at the back - he can play in central defence or at left-back.
Ferguson said: "We've been monitoring Gabriel for a long time and he demonstrates all the qualities of the top Argentinian defenders - strength, speed and excellent technical ability."
Before joining PSG, Heinze played for Valladolid in Spain and Sporting Lisbon in Portugal.
United, in keeping with the new policy on transfers, have revealed the breakdown of the payments involved in the deal.
Paris St Germain are to receive £5.7m of the fee - £3.4m in July, £1.3m on 31 December and £1m in July 2005.
A £300,000 fee is potentially payable under the Fifa 5% solidarity levy, a £300,000 levy is payable to the FA Premier League and £600,000 in fees is payable to agents for the acquisition of the player and the negotiation of his
United will not have to find a work permit for Heinze as he holds a German passport.
Chelsea reportedly made a £7m bid for the player in January, but PSG insisted Heinze would not be allowed to leave until the end of the season.
Heinze added: "I have a lot of things going through my mind. I have loads of
emotion about leaving PSG. I owe them a lot.
"The club and the supporters will have an important place in my heart for what they have done for me the last three years. I will never forget them.
"But my dream is coming true by joining Manchester United.
"We have not yet discussed which position I will play.
"They have shown great motivation to snatch my services even though I did not talk directly with Sir Alex Ferguson."