King is excited about the prospect of seeing the £29.7million former Sporting Lisbon man in action.
"Riyad Mahrez speaks very highly of him and he has a great goal record so hopefully he can be a big signing for us," King said.
"He could take some of the pressure off Vards. The more quality players we can have in the squad then it's going to help everyone.
"But I don't think Vards feels the pressure. He's off the mark now after people said he was in a drought – even after just two games without scoring."