Bayern Munich's Javi Martinez to undergo groin surgery

Bayern Munich midfielder Javi Martinez is expected to miss the next three weeks of the season after learning that he will need groin surgery.

The 25-year-old, who has been troubled with the injury all summer, is expected to undergo the knife before the end of the week.

"I don't have any problems when I play 20 to 30 minutes but that's when it's getting painful again," he told reporters at a press conference.

Martinez appeared as a substitute in Bayern's UEFA Super Cup win over Chelsea last week.