Chile coach Jorge Sampaoli says Manchester United want to sign Juventus midfielder Arturo Vidal. However, there's concerns over the Chile midfielder's knee injury suffered before the World Cup.
"Vidal set a great example at the World Cup in Brazil by playing when he wasn't in perfect shape.
"Now Manchester United want him, but what's holding up the transfer for $80m is that Van Gaal has doubts on his knee."
Vidal is currently in Indonesia with Juventus on their pre-season tour.
