Bayern Munich winger Arjen Robben has cast further doubt over his future with the club by admitting he has yet to decide whether to extend his contract beyond 2013. The Dutchman has hit top form recently with a string of stirring performances and five goals in his last two games, but he is still unhappy about being left on the bench last month. \"It cannot be said that I am 100 per cent certain I will stay with Bayern,\" said the 28-year-old. \"A lot has happened in recent weeks and I didn\'t play for three games in a row. Everybody saw that. It was not the best of times.\" Robben\'s current contract has just over a year left to run on it and he is attracting interest from clubs in England, where he appears keen to play again after a spell with Chelsea. He has therefore put contract talks on ice for the time being. \"It is not as if I have to sign a new deal next week,\" he told the Bild newspaper. \"I am just concentrating on playing football. I still have a year on my contract with Bayern so there is no rush. You never know what happens in football - it is often very strange.\" However, Robben insists he is \"not speaking to other clubs\" even though he admitted that \"maybe they do call from time to time\".