Manchester United legend Edwin van der Sar has been impressed by David de Gea this season.

Van der Sar rates De Gea among the best keepers in the world.

"Of course he is. He's had a tremendous year, made some very important saves and has been one of the strongholds of the team," said Van der Sar to manutd.com.

"That's good to see. Initially, in his first year, he had some difficulties but he has really achieved a lot. It's not easy to come to a different country at a young age with a different language and different methods but he really showed his worth and has become massively important to the club. The fans really appreciate him."