The attacking midfielder could miss the rest of the season - including the Champions League final - due to an injury picked up against Real Madrid.Jurgen Klopp fears that Borussia Dortmund will have to make do without the services of Mario Gotze for the remainder of the 2012-13 campaign due to a muscular problem.
The Germany international picked up a knock in the opening stages of BVB's 2-0 Champions League loss against Real Madrid on Tuesday and limped off the pitch after only 14 minutes of play.
It's not yet known exactly how long the 20-year-old will be out of action due to the injury, but Klopp believes Gotze could face a race against time in order to be match fit in time for the Champions League final on May 25.
"Mario picked up a muscle strain. It's going to be race against time for the things to come," Klopp was quoted as saying on the club's official website.
Gotze is expected to undergo a series of tests once Dortmund returns to Germany after Tuesday's match at the Santiago Bernabeu.
The attacking midfielder will certainly miss this weekend's Bundesliga game at home against Bayern.