Arsene Wenger has remained coy when asked about Alexis Sanchez's future.
The Chilean is out of contract at the end of the season and has been consistently linked with a move to Manchester City.
Sanchez can sign a pre-contract agreement with another club during next month's transfer window, but Wenger isn't worried about whether he will lose the 29-year-old.
Speaking after Sanchez scored twice in Arsenal's 3-2 win over Crystal Palace on Thursday night, Wenger said: "I am not fearful but as you said that will be a subject that arises because of his contractual situation.
"I can only repeat what I said until now.
"I never questioned his commitment but when you have his contract situation and have as a good a game, people question you."