Werder Bremen coach Robin Dutt said his side had played for Assani Lukimya after a draw with Borussia Monchengladbach.
Poland international Sebastian Boenisch claims to have turned down a new contract offer at Werder Bremen.
Hertha Berlin are being linked with former players Sejad Salihovic of Hoffenheim and Fortuna Dusseldorf's Assani Lukimya-Mulongoti.
Congo international Assani Lukimya-Mulongoti has given no clues about his future amid reported interest from Aston Villa.
Assani Lukimya-Mulongoti has welcomed reports linking him with Aston Villa, claiming he has always dreamt of turning out in the Premier League.