Dele Alli is thought to have played his last game for Besiktas.
The midfielder was given permission to fly back to the UK after picking up an injury with the Super Lig club. Sean Dyche confirmed he was aware of the 26-year-old’s return to Everton after being asked about him following the defeat to Manchester United.
An initial assessment is understood to have led medics to believe he will be unavailable for the rest of the season with a muscle injury.