Former Udinese boss Andrea Stramaccioni admits he's been surprised by Bruno Fernandes' immediate success at Manchester United.

Stramaccioni was Fernandes' manager at Udinese for one season in 2014.

He told Sky Sports: "I didn't expect such a quick impact at Manchester United, but they are different from the past. There are many young players and he was clever and earned his leadership.

"He was such a hard worker. Every training I said you have to come back this afternoon and do extra and he always did.

"He did two or three extra training sessions per week and worked hard on his technical side, and his strength in the gym. He is so strong mentality. He never said: 'No, why do I have to come back'.

"Look at videos of him six years ago and look at him now. It's all from his work and his mentality. I am very happy for him."