Arsenal winger Theo Walcott is set to undergo surgery after dislocating his shoulder and will be sidelined for the next seven to eight weeks.

The England international, who has a hereditary shoulder problem, suffered the knock during a training session with the national side prior to their 2-1 victory over Germany on Wednesday.

The 19-year-old is set to have an operation in the next few days after having seen a specialist about the problem.

"During Tuesday's training session Theo Walcott dislocated his right shoulder after falling on the pitch," said an FA statement.

"Arsenal's medical staff were advised of the injury soon after the incident."

After learning of his squad member's injury, Gunners boss Arsene Wenger said: "It is particularly not welcome at the moment because it is at a period where you want your players to recover a little bit.

"I don't see what you gain from this friendly because there is no game. You can explain a friendly to prepare for an official match but after this there is no international game for four months."