Harrison joined Everton on loan from Leeds last summer after the Whites were relegated from the top flight of English football.
Unlike the departure of some other players from Leeds, there is no bad blood between the club and the winger due to his exit.
Everton do not have an option to buy the winger in the loan agreement and there is hope that the player could be back at Leeds next summer if they get promoted back to the Premier League.
However, a clause in his contract means Harrison could move on again next year if the Whites do not get promoted.
As part of his contract, he will be allowed to seek another loan move away from Leeds if the club do not achieve promotion.
The winger has settled well on Merseyside after his loan move and is enjoying playing for Everton.
He has scored once and laid on three assists in six Premier League appearances for the Goodison Park outfit.
