Arsenal have signed French defender Mikael Silvestre on a two year deal from Manchester United.

The £800,000 deal came out of the blue and is a surprise given the rivalry between the two clubs.

The 31-year-old joined the champions in 1999 and has since won four Premier League titles, one FA Cup winner’s medal, a League Cup winner’s medal and was a member of the Champions League winning side last year.

He has also won 40 French caps.

Mikael told the 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. I’m really excited about this next stage of my career, hopefully playing my part in helping the Club to new successes.”

Arsenal manager Arsène 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.”

Mikael will wear shirt number 18.

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