Kevin Mirallas has re-joined Olympiakos on loan until the end of the 2017/18 season.
The forward moved to Goodison Park from the Greek side in August 2012 and has scored 38 goals in 186 appearances for the Toffees.
Mirallas, 30, last featured for Everton in the Europa League group stage victory over Apollon Limassol in early December.