Memphis Depay can become one of the best players in the world at Manchester United, according to Bayern Munich winger Arjen Robben.
Depay, 21, signed for United for £25 million from PSV Eindhoven in the summer and on Tuesday he scored his first goals for the club with an impressive brace against Club Brugge.
Robben plays alongside Depay at international level for Netherlands and has no doubts about the attacker's potential.
"He can become one of the top players in the world at Manchester United," Robben said in the Daily Mirror.
"He is already at such a high level, but playing at one of the biggest clubs in the world he will get even better. Manchester United will want to get back to winning trophies, and he will be a big part of that.
"I know that there was Liverpool and Manchester United interested in him, but it was an easy decision for him. There would have been no reason for him to join a club not playing in the Champions League, and Louis van Gaal is one of the best coaches in the world."
Robben added: "Memphis can become the complete player under his [Louis van Gaal's] guidance. It will not be easy, it never is when there are so many new players to settle him, but I think Louis could win the league with Manchester United this year.
"It's his team now, his players, and if the new signings settle quickly, I think it's possible."
United full-back Luke Shaw has also praised Depay, with the pair beginning to form a partnership on United's left flank.
"He's working so hard in training," Shaw said on United's official website. "He was really trying to get that first goal. Now he's off the mark, hopefully it can bring him many more goals.
"I think our relationship is starting to build up. We have played a couple of games together and I'm starting to understand how he wants to play.
"It's great to be playing with him, he can beat a man and he likes the attacking support from me as well, which is something I like to do."