Daniel Sturridge was pulled out of Trabzonspor's clash with Sivasspor at the last minute.
Fanatik says he was expected to start the Sivas match. However, he was withdrawn after complaining of achilles pain.
After tests, it was found the former Liverpool striker had edema in the right achilles tendon.
Sturridge immediately started treatment after being removed from the squad for the Sivas game.
The setback isn't serious, however, and there's confidence he'll be fit for their clash with Besiktas.