Remy, who has spent the season on-loan at Newcastle from Championship side QPR, has been linked with a move to the north Londoners in recent weeks.
Hoops boss Harry Redknapp revealed last week that Remy has a buyout clause in his contract.
Harry Redknapp: "I don't even know what the deal is or what his buyout clause is.
"I would think it'll be difficult to keep him but I don't know."
Rangers signed Remy from Marseille in a £8m deal in January 2013, however, it is thought the Loftus Road club are seeking a fee in the region of £12m if they are to cash in.