Gabriel Jesus will miss the start of the Premier League campaign after Arsenal boss Mikel Arteta confirmed the forward has undergone a minor operation.
The Brazil international missed three months of last season after suffering a knee injury at the World Cup.
Jesus impressed following his move from Manchester City last summer but now faces a short spell on the sidelines after going under the knife after “irritation” with the original knee issue.
Speaking after Arsenal beat Monaco 6-5 on penalties following a 1-1 draw at Emirates Stadium, the Gunners boss said Jesus had felt some pain in his knee for the past few weeks.
“Unfortunately he had a little procedure this morning. He had some irritation in the knee and we had to get it resolved. It’s not major but he will be out for a few weeks I think,” Arteta said.
“We had to make a decision and the best one is to protect the player and to get him back as quickly as possible, so we decided to do it.”
Jesus’ injury comes four days before Arsenal face treble winners Manchester City in the Community Shield and 10 days before their first match of the Premier League season against Nottingham Forest.