Danny Mills has claimed it would take a bid of at least £80million to prise Richarlison away from Everton.
Speaking exclusively to Football Insider, the ex-Leeds United and England defender also suggested James Rodriguez could quit the Toffees after Carlo Ancelotti left for Real Madrid.
Football Insider learned on June 3 Ancelotti is keen on taking Richarlison to the Spanish capital after his return to Real was confirmed.
It is understood Everton will listen to offers for the Brazilian if he pushes for an exit.
Rodriguez moved to Goodison Park last summer after working with Ancelotti at Real and Bayern Munich.
And Mills has claimed there is a “possibility” he could push for an exit.
He told Football Insider correspondent Connor Whitley: “Fee wise, James Rodriguez wouldn’t be a huge fee, he moved to the club on a free in the first place.
“His wages will be high and he’s struggled with fitness at the back end of the season. He probably only came to Everton in the first place for Ancelotti so that’s a possibility.
“Richarlison, is he good enough to take that next step up to Real Madrid? It’s a bit of a gamble, especially with the Gareth Bale situation at Real Madrid.
“Everton would want big, big money for a player like Richarlison especially from Real Madrid with Ancelotti trying to take him.
“That’s less likely to happen. They paid £50million, so they’ll be thinking ‘Hang on a minute you’re nicking a player we’re going to have to replace, you’re looking at £80million or £90million.’
“I’m not sure he’s in that bracket, although that’s what it’s going to cost.”