Arsene Wenger has said that he is concerned about Theo Walcott's persistent injury problems. Walcott, 21, faces up to six weeks out after damaging his ankle in England's 3-1 Euro 2012 qualifying win over Switzerland on Tuesday.
Wenger said: "It is frustrating for him. You never know what kind of psychological impact it has. The mental side is always a question mark when a player gets injuries."
Theo Walcott first suffered a lay-off in November 2008, when he dislocated a shoulder on England duty, ruling him out for six months. And Wenger added: "When you are a manager and you see an injury doesn't harm the career of a player, you are happy. After that the only unknown quantity is how much it will damage his confidence in the box, on tackling and all that."