Arsenal have confirmed Wilshere is to undergo a minor procedure on his knee in the next few days.
A statement on arsenal.com said: "England international Jack Wilshere is continuing to recover very well from the injury to his right ankle which ruled him out of action for the 2011-12 season.
"However, his ongoing rehabilitation has seen a long-standing slight issue with his patella tendon in his left knee flare up.
"As a result, Jack will travel to Sweden for a minor procedure on his left knee in the next few days. This procedure is not expected to significantly affect Jack's comeback ahead of next season.
"On returning to England, Jack will resume his rehabilitation with the Arsenal medical team over the summer."