The striker is expected to leave Anfield this summer after failing to impress following his big money move from Aston Villa last summer.
Palace are keen on bringing him to Selhurst Park and are firmly in discussions with the Reds about a possible move.
They are reportedly prepared to offer £27 million up front with £4.5 million in add-ons, having seen a £25 million bid rejected outright.
Liverpool are not keen on a deal including add-ons though and instead want £30 million up front for their man.
At the moment the two clubs are slightly apart then, but according to the Mirror both parties are confident that a deal can be struck sooner rather than later.
The Eagles would be smashing their transfer record to the secure the Belgian, and are also willing to match his £120,000-per-week wages to seal the deal.
The player is thought to be keen on a move too, having found himself far down the pecking order on Merseyside last season under both Jurgen Klopp and Brendan Rodgers.