Arsenal forward Alexis Sanchez says his "love for the game and anxiety to be on the pitch" may have cost him after suffering another injury problem.
Sanchez started the Gunners' 2-1 win over Leicester City on Tuesday 10 February having missed the club's previous two games but was forced off with a knee problem after 68 minutes.
A hamstring injury previously saw the Chile international miss games against Aston Villa and Tottenham Hotspur but manager Arsene Wenger blamed a "knock on his [Sanchez's] knee" for the latest setback.
While Wenger was unable to speculate further on the forward's injury in his post-match press conference, Sanchez has hinted it was his desire to return to action as soon as possible that may have played a part in the latest knock.
Sanchez's desperation to return ahead of schedule saw Wenger consider the ex-Barcelona star for the north London derby with Tottenham on 7 February before eventually deciding against it.
"[Telling him he cannot play] is not easy," Wenger said on Sanchez, speaking to the press last week ahead of his side's trip to White Hart Lane. "He wants to play of course. He is very keen and thinks he can even defy the medical people because he is so keen."
"I need medical advice on that [on whether he could play against Tottenham] and need as well to see what he can do in training."
Speaking after the victory over Leicester, which saw Arsenal move into the top four of the Premier League, Wenger was unable to discuss the severity of Sanchez's new injury.
He said: "Sanchez got a knock on his knee. I don't think he was himself. From the moment he got this knock, he was never really comfortable. I don't know for how long he will be out and whether he will be out or not. I haven't seen the doctor."