Arsenal have snapped up Mikael Silvestre from Manchester United for an undisclosed fee.
The French defender was sidelined for much of last season due to injury before returning to action in March.
He has been linked with a move away from Old Trafford this summer and the likes of Roma and Bordeaux have both expressed an interest.
A number of Premier League clubs including Manchester City and Sunderland have also been connected with Silvestre but United have now allowed him to join fierce rivals Arsenal.
Silvestre signed for United from Internazionale in 1999 and made almost 250 appearances for the club.
He will now look to rediscover his best form at Emirates Stadium and challenge Gael Clichy for a place at left-back after signing a two-year deal with the Gunners.