Arsenal midfielder Denilson admits his injury suffered in the 2-2 draw with Everton is a mystery.

Denilson, who is 22 next month, believes his injury is not too severe.

He said: "I don't remember what happened. I was just running with the ball and I felt a pain in my side. I couldn't run or stop the ball, but I feel okay now.

"I am going to have a scan and then I will know how long I will be injured, but I think I will be ready for Sunday [at Bolton]."

Denilson believes Arsenal are very much genuine title challengers.

He said: "The most important thing was that we didn't lose. We have one point, we keep the momentum going and we feel good.

"We have more experience this season and we are coming to win this trophy this season."