Respected Italian agent Andrea D'Amico has claimed Manchester United target Arturo Vidal will leave Juventus this summer.

Despite Juventus manager Massimiliano Allegri insisting the Chile international is happy to stay in Turin, Vidal is still being heavily linked a move to Old Trafford.

The midfielder admitted last week he is unsure whether he will remain with the Serie A champions, while recent reports from the Chilean press suggest his agent is finalising a deal that could cost United £47m as Louis van Gaal aims to mend the club's lack of commanding options in midfield.

In a move which will further intensify speculation, D'Amico, who represents Vidal's current teammate Sebastian Giovinco, believes the Bianconeri are prepared to sell either the Chilean or former United player Paul Pogba in the coming weeks, with Vidal most likely to depart.

"Vidal and Pogba? One of the two will leave," D'Amico told Sky Sport Italia. "I'll go a step further, I'm convinced Vidal will certainly leave."

Vidal returned to training with his club after his summer break, ahead of their pre-season tour of Indonesia, Australia and Singapore.

Allegri, who replaced Antonio Conte as the manager in July, has wasted little time in addressing the future of the powerful midfielder and insists he is happy to remain at the club.

"Vidal is fundamental for Juventus and not just in practical terms. He is very motivated and he is happy to stay," Allegri told Juventus' official website.

"I spoke to him to satisfy myself of his physical condition as he was operated on and then played a World Cup, so he will train on a special schedule for a few days."

Despite Allegri's reassurances, speculation over Vidal's future has refused to subside.

According to La Tercera, the midfielder's agent, Fernando Felicevich, met Juventus director general Giuseppe Marotta to present an offer he has received from United, one that will see his client earn £200,000 a week at Old Trafford.

While United's new arrival Ander Herrera has shone in his early outings for the club during their pre-season tour of the US, the club are in need of further reinforcements in the centre of the park.

Van Gaal has already lost one option in Michael Carrick, who is ruled out for three months after suffering an ankle injury, while the Dutchman appears set to cut ties with Marouane Fellaini before the season has even started.

The Belgian international, who endured a miserable first season at United following his £27.5m move last summer, is wanted by Napoli, who have since confirmed their interest in taking the midfielder to Serie A.