The big French centre-back impressed alongside Keane during a season-long loan at Goodison Park last term.
But he's back at parent club Chelsea for now and newly-appointed manager Frank Lampard is on record as saying that he'd like to keep him in West London.
He said: "He is a brilliant player who is very good on the ball as well as being a top defender so I think we complimented each other well.
“If we can get him, great, but if not then it's out of hands and it's up to the manager then to decide what happens.”
But you get the feeling that Director of Football Marcel Brands needs a few more bodies in to boost Everton's chances of challenging for the top four which, given their outlay in recent years, should be the goal this season.
Have something to tell us about this article?