He told manutd.com: "Ando became stronger as the season went on. He penetrates by running forward with the ball and finding the right passes.
"There's more to come from him, and also Gibbo - it's no surprise that when he's come into the first team he's done fantastically well."
The Dutchman added: "It was a difficult season for Nani, but he has everything you'd wish for in a footballer in his position. He has two good feet, plus he's quick, explosive, direct and skilful."