Chelsea's Willian has backed his Brazil team-mate Fred to be a major success at Manchester United and said he is moving to "one of the best teams in the world".
Midfielder Fred is set to join Jose Mourinho's side after a £52m deal was agreed with Shakhtar Donetsk yesterday.
Chelsea forward Willian, who is currently on international duty with the 25-year-old ahead of the World Cup, believes he has a bright future and will make the grade in England.
"Of course, no doubt about that," replied Willian when asked if Fred will thrive in the Premier League.
"He has a lot of quality, he can improve a lot. He is going to one of the best teams in the world and I'm happy for him.
"I hope he does well at Manchester United."
Willian has given advice to Fred about playing in England but insists both men are fully focused on the World Cup ahead of their country's final warm-up friendly against Austria on Sunday.
"He's very happy to come to the Premier League to play, we talked about that," added Willian, who joined Chelsea in the summer of 2013. He's excited to start but now it's time to think about the World Cup and think about the national team."