Laurent Koscielny is delighted for Per Mertesacker over his new Arsenal contract.
Mertesacker inked new terms with the Gunners this week.
"For Per I'm happy," Koscielny told Arsenal Player. "It's his third season here and he signed a new contract. I think he gives everything for the Club, it's a man who is respected by all of his team-mates.
"He's a German so he's professional and it's very important to have a partner like him in the squad. He tried to give himself for the team and when the other players see that, they want to do the same."
