Arsenal have completed the signing of midfielder Samir Nasri from Marseille.

The 21-year-old French international has joined the Gunners on a long-term contract for an undisclosed fee.Believed to be around £12 million.

Nasri, who will join up with the Arsenal squad on their pre-season tour of Austria on 21st July.

Nasri said: "I am very happy to become an Arsenal player, it means such a lot to me."

"This is a very important step in my life as a football player because Arsenal is a massive club."

"I really hope everything will go well for me here. I will do my best for Arsenal and its fans and I am honoured to be part of such a great football club."

Arsenal manager Arsene Wenger added: "We are delighted to be signing Samir Nasri. He is young, quick and technically an outstanding player."

"He has shown great potential with his performances for Marseille and the French national team over the past two seasons and he will add great quality to our squad."