Mohamed Zidan's third spell with Mainz appears set to come to an end after the Egypt striker failed to agree a new contract with the club, according to Kicker magazine.
Zidan, 30, has dazzled for Mainz since rejoining them from Borussia Dortmund in January, with his seven goals in 12 Bundesliga games helping keep their heads above water.
The Egypt international previously left Mainz in 2006 to return from a loan spell at Werder Bremen, and in 2007 after agreeing a move to Hamburg, and having now failed to win a contract extension he may look elsewhere again.
Mainz had the option to extend Zidan's current deal into 2014 but chose to offer him a rolling contract instead - a decision that was not greeted favourably by the player.
"Mohamed Zidan has rejected (the contract offer) and we are not going to negotiate any further,'' Mainz's general manager Christian Heidel said. "The plan did work out in that he made a huge contribution towards us avoiding relegation.
"We have had three fantastic short spells with Zidan, but now it all came down to a long-term collaboration. Money was never an issue, it was purely the length of the contract.''