Mertesacker agent cools Villa link
He told Sky Sports: "At the moment it is not possible for Per to leave.
"He is under contract until 2010 and he is a very important player for Werder Bremen.
"There has been interest in Per since the last World Cup, with English clubs watching him.
"Aston Villa are a big club, but Per is happy at Bremen and he will stay at Bremen this season."