Fred has split opinion amongst the United support.
But Kleberson told Paddy Power: “Every manager would love a player like Fred. He works hard and is always trying his best for the team. The Brazil national team manager likes him a lot because of his work ethic. Fred is always in the game, getting involved, pressuring the opponent and isn't afraid of the ball.
“Fred is improving a lot and able to adapt his play depending on the team he's playing with. He always likes to move the ball; he always defends well and still manages to get forward."
Kleberson also had his say on Cristiano Ronaldo's arrival.
He added: “Cristiano Ronaldo can challenge for the Golden Boot this season. He's never going to play football just for the money. He will push the squad to play better in training and in matches. Also, when he starts to play, he gets somewhat competitive. But he's competitive about himself, he wants to push himself to become better.
“When he's with the Portuguese national team, he pushes his teammates hard to win games to get to finals. At Real Madrid and with Juventus, he worked hard for those guys because for him the better the team is playing, the easier it is for him to get the goals and the awards. He needs his teammates to feel good because it helps him to achieve those goals.
“It's a great signing for Manchester United because he knows the club well, he knows a lot of the staff there and they know him. Every player is a big fan of Ronaldo and so they will all work hard to help the team win, and to have players like Paul Pogba and Bruno Fernandes around him can really help them win titles.
“I cannot believe the team that Manchester United have now. It's amazing! So many good players."
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