Sanchez only has one year left on his Gunners contract, having so far refused to sign a new deal, and Vidal is eager to get his Chilean compatriot to the Allianz Arena.
“We’ll see if Alexis is coming. I do not know yet,” Vidal told German newspaper Bild.
“I know him very well. He is a spectacular player. And with him, we would surely improve.
“We already have a lot of top-level players. We are the best club in the world.”
Sanchez became Chile’s record goalscorer last week after netting against Germany in their 1-1 draw at the Confederations Cup.