Ferguson's French switch stunner

Mikael Silvestre said he was ready for a "new challenge" after completing his shock switch to Arsenal from rivals Manchester United.

The 31-year-old, who can play at full-back or in the centre of defence, ended his nine-year association with the champions on Wednesday to sign a two-year deal at the Emirates for an undisclosed fee.

Bordeaux, Manchester City, Sunderland and Roma had all been credited with an interest in the France international, but Silvestre, who missed a large part of last season with knee ligament damage, told his new club's official website: "I've spent a large part of my career at United, the last nine years, and I'll remember that time fondly but feel I'm ready for a new challenge.

"Arsenal is known for playing technical and skilful football, and has a young but experienced squad. I'm really excited about this next stage of my career, hopefully playing my part in helping the club to new successes."

Manager and countryman Arsene Wenger added: "We have a strong squad but a young squad and Mikael's versatility, experience and calibre will provide the extra depth we need to reinforce our challenge for honours this season.

"His defensive adaptability will serve us well and it's a big plus that Mikael has top level experience and a great understanding of football in the Premier League."

Silvestre's move from Man Utd to Arsenal is the first such switch since Brian Kidd's over 30 years ago and the first ever transfer deal done between Sir Alex Ferguson and Wenger.

Ferguson's first signing in 1986 was Viv Anderson from Arsenal.