Soccer: Samir Nasri has cast more doubt over his Arsenal future by admitting he may not sign a new contract and even refusing to play down the prospect of defecting to Manchester United.

Nasri's is entering the final year of his deal and the Gunners may be forced to cash in this summer if he refuses to agree an extension.

France team-mate and United left-back Patrice Evra last week urged Nasri to join him at Old Trafford. And the 23-year-old midfielder has done nothing to ease any fears Arsenal fans might have ahead of his country's friendly against Poland on Tuesday.

"I don't know if I will sign a new contract," Nasri told TF1's Telefoot. "Anyway, the discussions are ongoing. For the moment, I don't think about this. We will speak about it after the match with Poland.

"Do I want to go to Man United? First, we should see if it's real and if it is concrete."

The loss of Nasri would be a huge blow to Arsenal, with the midfielder undoubtedly the star of the first half of the Barclays Premier League season.