Selling Alvarez would be mad unless he really, really. REALLY wants to leave and goes full Cancelo. Which obviously he does not, according to his latest statement at least. In my opinion the whole thing is the product of media and his agent maybe.
Just for start, who is a player in the current market with all of his abilities and versatility who could replace him, for the similar money? That is the reason Pep was pissed off with this line of questioning, because he does not want to lose him, and that is the reason why Alvarez came out with that statement.
Man City is the only team according to media where players are supposed to leave after wining everything. Never heard it about any other team who were serious winners. We just need to accept (with some glee) we been living in their heads rent free and it is causing all this screaming&ranting.