Mesut Ozil has said he is still "very happy" at Arsenal but "something is not working with the team" at the moment.

Ozil's contract talks with Arsenal are on hold until the summer.

"The fact is I've still got a contract in London," Ozil said in quotes reported by the Mirror. "To speculate now would be wrong. At the end of the season we will see, there will be talks. I'm very happy at Arsenal and in London."

Arsenal are only sixth in the Premier League after losing four of their last five matches, and were knocked out of the Champions League 10-2 on aggregate by Bayern Munich.

"We are having a difficult phase. Somehow something is not working with the team," Ozil said. "We are letting in a lot of goals. Maybe it's down to self-belief. When I look at the quality of Arsenal though I'm convinced we will get on a run again soon."