Arsenal defender Per Mertesacker says Mesut Ozil will live up to his club record fee.

Mertesacker is adamant Arsene Wenger has found value for money in signing Ozil from Real Madrid for £42.5m.

Mertesacker, Ozil's national team-mate, said he will make a "massive" difference to Arsenal's season and has invigorated the squad.

"I think he is worth what we paid for him," Mertesacker told the Daily Mail.

"He is a phenomenal player and I think he has not reached his best at the moment. I think his contribution to this club will be massive."

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