Do.Not.Sell. This would be a big mistake. We desperately need width, this guy provides it. Offensive and quick fullbacks of his skill level are rare and make a big difference in Europe elite.
I'd rather sell Kean for 40M with a buyback clause or, if not possible (not letting him go without the clause), shop Alex Sandro away. He definitely would go for a similar price as Cancelo, and after seeing him playing for Brazil in Copa America, I'm positive he's definitely washed up. Have no idea if it is mental or physical, but the guys is just not there.