Bayern Munich is struggling with injury concerns ahead of its UEFA Champions League home opener against Manchester City on Wednesday. French winger Franck Ribery will definitely missthe game after his knee problem flared up again, while Dutchman Arjen Robben is a doubt, also with a knee problem. In defense, Holger Badstuber, who only justreturned from consecutive ACL surgeries, is now set for several months on the sidelines after tearing a thigh muscle tendon during Bayern’s 2-0 win against VfB Stuttgart last weekend. Otherlong-term absentees include Thiago Alcantara, Bastian Schweinsteiger and Rafinha.