The London Evening Standard says Mitroglou is seeing a specialist in Italy over his knee injury amid fears his season could be over.
There are concerns in Greece about whether the £12million striker, who has cost Fulham more than £100,000 for every minute he has played, will be fit enough to play at this summer's World Cup.
But Fulham's priority is to get him back for the relegation run-in. They are bottom of the Premier League, five points from safety with just six games remaining.
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