Injured Olympiacos striker Kostas Mitroglou will be out of action for at least a month, the Greek champions have announced.
Mitroglou, 25, the leading scorer in the Greek Super League with 14 goals in 11 matches, was injured in the second half of Wednesday's 2-1 loss to Paris Saint-Germain in the UEFA Champions League. He was later dignosed with a meniscus injury that will require exploratory surgery.
As a result, Mitroglou will miss the decisive Champions League home match against Anderlecht in which a victory for Michel's side will ensure that they qualify for the last 16 from Group C.
Mitroglou, whose goals have also helped Greece qualify for next year's World Cup in Brazil, is under contract with the Piraeus-based team until 2016.