Borussia Moenchengladbach could be without star midfielder Marco Reus for Saturday\'s key German league clash against defending champions Borussia Dortmund after he broke his toe, the club has revealed. The 22-year-old broke the little toe on his left foot in Friday\'s 3-0 win at Cologne which knocked Bayern Munich off the top of the Bundesliga and his club hopes to have him fit as Dortmund have won seven of their last eight league games. Dortmund displaced Monchengladbach at the top on goal difference on Saturday when they beat Schalke 04 2-0, but Bayern Munich could return to the summit later today if they draw or beat struggling Mainz. \"Whether he or not he will miss any football will be known in the next few days,\" \'Gladbach\'s spokesman Markus Aretz told SID. With ten goals in 14 games this season, Reus is \'Gladbach\'s top scorer.