The Chilean forward swapped Serie 'A' side Udinese for Barcelona in the summer of 2011. But he's endured mixed fortunes at the Nou Camp, and a lengthly goal drought earlier this term shattered his confidence.
Arsenal and Liverpool have been tracking Sanchez, and the Premier League pair were expected to compete for his signature come the end of the season.
But Vidal, who plays alongside Sanchez for Chile, has urged his international colleague to return to Serie 'A' instead.
Speaking to Tuttosport, Vidal said: "I don't know if he will arrive, but I would be very happy if he was to join us.
"What did we say to each other the last time we went out for dinner? I won't answer that, although it seems as if I already have."
Vidal himself has been the subject of transfer speculation, with Manchester United and Bayern Munich thought to be among clubs interested in the Chilean.
But Vidal moved to quash the speculation, insisting he's happy with life at Juventus. The rumours around Sanchez continue to gather pace though, as the former-Udinese man has struggled to hold down a regular starting berth in Catalonia.
Brendan Rodgers at Liverpool and Arsene Wenger at Arsenal both may feel that Sanchez could improve their squads, and there would be sure to be a transfer scramble at the end of the season should he become available.