Croatia are sweating over the fitness of influential midfielder Ivan Rakitic for their quarter-final clash with Turkey on Friday.

The Schalke man is struggling with a knee problem and will undergo a late fitness test prior to the match at the Ernst Happel Stadion in Vienna.

"The team doctors are optimistic that he will be fit but he is still in pain with a niggling knee injury," Croatia coach Slaven Bilic told a news conference at the team´s training base in Bad Tatzmannsdorf.

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