Having arrived from Athletic Bilbao this summer, Herrera has settled very well into new surroundings at United and his Spanish team-mates have helped him along the way.
“I have played with Juan since we played for the Spain Under-21 team,” Herrera recently said.
“We have a great relationship and with David too. For me he will become the best keeper in the world. He always trains hard and wants to improve. That’s very important for a keeper.”
This season, all three players are going to be vital for United if Louis van Gaal is to have any chance of regaining the Premier League.