Alexis Sanchez suffered an injury while training with Chile

Arsenal face an anxious wait over forward Alexis Sanchez after he limped out of training with Chile with a muscular injury.

Sanchez was forced to the sidelines during a session at Chile's training camp with what appeared to be a calf problem.

A statement from the Chile FA read: "The medical corps of the Chilean national team informs the player Alexis Sanchez has a low-grade muscle injury.

"The athlete will stay in Santiago, under treatment and evaluation, before the meeting of Chile and Uruguay."

Chile travel to Colombia for a World Cup Qualifier on Thursday, which Sanchez will miss, and then return home to face Uruguay on November 15.

Sanchez has scored eight goals for Arsenal so far this season

Arsenal have a busy spell of games coming up after the international break, and losing Sanchez for any length of time would be a massive blow.

They take on Manchester United at Old Trafford on Saturday week and then host Paris Saint-Germain on November 23 as they look to put their stamp on top spot in Champions League Group A.

Highlights of Arsenal's 1-1 draw with Tottenham Highlights of Arsenal's 1-1 draw with Tottenham

The 27-year-old has scored eight times in all competitions this season, including goals against PSG and Ludogorets in Europe.