Bayern Munich coach Jupp Heynckes fears he will be without forward Toni Kroos for "a long time" after the Germany international suffered a muscle tear during last night's Champions League win over Juventus.

Kroos was replaced in the 16th minute of the quarter-final first leg at the Allianz Arena after falling to the floor following an innocuous-looking challenge.

It is not yet known how long Kroos will be sidelined for, but initial tests suggests he will be out for a number of weeks.

A statement on Bayern's official website read: "An initial diagnosis by FCB chief medical officer Dr Hans-Wilhelm Muller-Wohlfahrt suggests the Germany international has ruptured a group of adductor muscles in his right hip and now faces several weeks on the sidelines."

Heynckes said it will "take a long time" before the 23-year-old Germany international will be available again, adding: "This is obviously very bitter.

"It's just such a shame for a young player who has played great this season."

Bayern, looking to reach the Champions League final for the third time in four years, beat Juve 2-0 tonight with goals from David Alaba and Thomas Muller.