Borussia Dortmund captain
The 33-year-old midfielder, who was an unused substitute in last weekend's 6-2 victory over Hamburg, suffered a ligament tear in his foot during a training-ground collision and will miss Dortmund's UEFA Champions League group game against Napoli on Wednesday evening (Thursday morning AEST).
A statement published on BVB's official website read: "A scan performed by team doctor
"Kehl is expected to be out of action for about six weeks."
The 2012 Champions League finalist will also run the rule over defender Neven Subotic and forward
Sebastian Kehl pushed his former club Freiburg closer to relegation with the only goal of the game as Borussia Dortmund triumphed 1-0 at the Dreisamstadion.