The Toffees are looking to pip their Premier League rivals Arsenal to the signature of the Ivory Coast international this summer after he admitted he was looking for a new challenge to develop his career.
And according to the Telegraph, Everton are ready to make their move by offering big-money to Palace for Zaha and include Turkish striker Tosun in the deal.
But the report also claims Chelsea are weighing up a bid for the 26-year-old when their transfer ban ends next summer if Zaha is still at Palace.
More to follow…
Chelsea could enter the battle for Wilfried Zaha when their transfer ban ends next summer