If we sell him it only makes sense if:
1) Vidal wants to leave
2) We use the money we get from Vidal to get a number 10 (I like Oscar)
3) We don't become a selling club, we keep Pogba, Morata, Dybala etc for years and years
Vidal is 28 with 2 years I think left on his contract, technically this would be a good time to sell him. But I don't like technically, I like thinking with emotion and I like Vidal. Selling a young player though like Pogba, Morata, Dybala etc at young ages after just a couple years would end any chance of being a top club.