Bayern Munich's Brazil winger Douglas Costa was on Sunday ruled out for the foreseeable future with a hamstring injury, 10 days before their Champions League clash at Atletico Madrid.

Costa suffered the injury in the second-half of Bayern's 3-1 comeback win at home to Ingolstadt in the Bundesliga on Saturday, which preserved their 100 percent record after three league games under new coach Carlo Ancelotti.

Having come off after 83 minutes, Costa's injury was confirmed by Bayern's team doctor Volker Braun, but the club gave no details on Sunday of how long the Brazilian will be out for.

Bayern face Atletico away in a key Champions League ground stage match on September 28 in a rematch of last season's semi-final, which the German giants lost over two legs.

The timing of Costa's injury is unfortunate with Bayern hosting Hertha Berlin on Wednesday, then facing Hamburg and Atletico away, before a home German league match against Cologne, all in a ten-day period.