The veteran goalkeeper made his return to action in the victory against Burnley last weekend.
Evans said: “Edwin makes a great difference. He is a great communicator and has real composure.”
He added: “You can pass the ball back to him and you know he can play it out with either foot. It makes life a lot easier.
“At 39 he has the experience that the other goalkeepers don’t have. Keepers don’t get into their prime until their 30s.
“He is probably playing the best football of his life. He is a really good professional and a very nice man.”