Ronald Koeman says Romelu Lukaku is too good to spend his whole career at Everton and even suggested the striker could one day play for Barcelona.
Lukaku has scored seven goals in the Premier League this season and 68 in all competitions since joining the club, initially on loan, from Chelsea in 2013.
It has prompted reports of interest from Paris Saint-Germain, with a possible return to Chelsea also mooted.
However, Barca, who currently have European Golden Shoe winner Luis Suarez up front and signed Valencia's Paco Alcacer in the summer, have not shown any signs of interest in the Belgium international yet.