Walcott to undergo minor surgery
The winger will miss England's ties against Montenegro and Poland on October 11 and 15. He was also out of Arsenal's game against Stoke City which they won 3-1.
"Theo will be out for a few weeks," Arsenal manager Arsene Wenger told the Arsenal website.
"He has developed some damage to his posterior abdominal wall. It's not a hernia, but it's a little structural problem in his abdomen.
"He will have the procedure in Germany on Wednesday and, because it's so minor, we can begin his rehab immediately.
"We are pleased it's being dealt with quickly and he shouldn't miss too many Arsenal matches. But he will miss the forthcoming international matches with England."
Walcott joins Arsenal's growing injury list that includes Lukas Podolski, Alex Oxlade-Chamberlain and Santi Cazorla, and will miss the League Cup tie against West Brom, the Premier League tie against Swansea and the key Champions League home game against Napoli.
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