Rafael has become an ever-present at right-back for United.
Evans told Inside United: "I actually think Rafael has done really well. He has shown real maturity. His brother has gone out on loan now and it's probably given him a lot more responsibility. Because of the injuries, too, there hasn't been much competition for him at right back so he has really stepped into the position and made it his own.
"Some people have criticised his all-action style, but I think he has managed to find the right balance now and he's become, I think, one of the best full-backs in the world."