Christoph Metzelder has hit out at Hoffenheim

Former Germany defender Christoph Metzelder has criticised Hoffenheim over the treatment of some of their players.

Manager Markus Gisdol has over-hauled his squad after narrowly missing out on relegation last season.

He has told a number of high-profile players, including international goalkeeper Tim Wiese, that they are surplus to requirements.

"This is a question of law and morality," Metzelder told Sky.

"When two sides sign a contract, you have to stick up for it."

Hoffenheim drew 2-2 with Nuremburg yesterday, on the opening day of the Bundesliga.