Everton winger Henry Onyekuru has suffered another injury blow after spending the second half of last season out on the sidelines with a knee problem.
Onyekuru who is currently on loan at Galatasaray will miss the league clash against Bursaspor.
The club have confirmed that the Nigeria international returned from national team duty with a hamstring problem in his left leg.
The Lions medical team have revealed is in rehab but did not state how long they expect him to be ruled out.
Onyekuru missed out on the World Cup in Russia over the summer due a lack of match fitness after recovering from his previous injury.
The latest injury does not appear to be related to his knee problem that ruled him out of action last term.
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Galatasaray head coach is facing an injury crisis with Younes Belhanda, Garry Rodrigues and Ryan Donk all ruled out for the Bursaspor game on Friday 19 October.
Terim will be hoping Donk, Rodrigues and Belhanda recover in time for the Champions League Match Day 3 encounter with Schalke at the Turk Telekom Arena.
Onyekuru is almost certain to miss the European competition clash next week.
