Manchester United may have taken a step closer to luring Chelsea's Juan Mata, but may also have to resist an approach from Real Madrid for Wayne Rooney.

Manchester United target Arturo Vidal has told Sport Bild he is the "best in the world" in his position for Juventus.

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Vidal, 26, has emerged as a key player for Serie A champions Juventus since joining the club from Bayer Leverkusen in 2011.

In 20 league appearances this season the midfielder has scored 10 goals and tallied five assists, to help Juve open up an eight-point lead at the top of the table.

Vidal's form has seen him linked with a move away from the Old Lady, with United hopeful that the offer of a significant wage increase will entice him to Old Trafford.

"Why am I playing so well? Well that's simple," Vidal told Sport Bild, according to Football Italia. "Because in my role I am the best in the world.

"Many try to imitate my style, but I want to say one thing -- I'm the best in the world.

"In my role, no one defends like me or scores as many goals as me.

"I have won two Italian championships and am under contract until 2017. I want to win the Champions League with Juventus until then."

Pressed on the rumours of a transfer away from Juve, Vidal added: "I am not aware of them. I keep getting linked to other clubs, like Manchester United recently. That's just normal when you put in good performances at a top club."