"We frequently stay after training to practice crossing and finishing," De Gea said.
"We do it especially when there are no matches in the following days and I think the extra training helps me and the other players to improve."
De Gea is good friends with striker Chicharito and the duo’s positions on the field mean they naturally benefit from working together at the Aon Training Complex.
"We help each other – he tries to make it difficult for me and I try to make it difficult for him," De Gea added. "We always do our best and he's a player who gives his all in training.
"He is one of the most professional players I have known over the course of my career. He is truly a great player and a good friend."