Wayne Rooney will miss up to three weeks of action for club and country, Manchester United boss has Sir Alex Ferguson confirmed.
The striker, who has been short of form and goals all season, was substituted with half an hour left against Bolton in the Premier League on Sunday and did not travel with the United squad for their Champions League match against Valencia.
The injury update from Ferguson means Rooney will miss the league game at Sunderland on Saturday and also England's Euro 2012 qualifier against Montenegro on October 12.
Ferguson also confirmed that midfielder Paul Scholes will be sidelined for over a week with a calf problem.
Rooney's absence against Montenegro will be a blow to Fabio Capello given he has already lost Frank Lampard, Theo Walcott, Jermain Defoe and Bobby Zamora in a growing injury list, plus James Milner through suspension.
He has still only scored once this season - from the penalty spot - compared with three in a week for Michael Owen and seven so far this season for top scorer Dimitar Berbatov.