Barca's ultimatum to Umtiti: either he agrees to leave or he'll be rescinded

Barcelona's patience with Samuel Umtiti has reached its limit. The French centre-back is not willing to leave the club, as he wants to serve out the remaining two years of his contract, even if he does not play. Barca are prepared to rescind his contract if he does not agree to leave.
Umtiti is playing his cards. He wants to run out the contract he signed with Barcelona in 2018, before his injury ordeal began. He is fully aware that he has been devalued and that no one will pay him what he currently earns at the Catalan side.
And that irritates Barcelona. Because offers are coming in for their player, but none of them satisfy him. And no matter how much they want to get rid of Umtiti, who has already become a problem for the club, if he doesn't agree to leave there is nothing to do.
Or yes, but it is a drastic solution that nobody wants to execute: the rescission of his contract. 'Sport' says that Barcelona have given Samuel Umtiti a week to accept one of the offers that have come in for him, and if he doesn't he will be sacked.
Umtiti will somehow get his way. The contract rescission will bring him instant profits, and the freedom to negotiate with whomever he wants. For Barca, it will only be a short-term loss, but it will take a problem off their hands.
The player asked the club for one last chance, and was given the pre-season to convince Koeman, who gave him minutes in four friendlies. He started against Nastic and Girona, and was a substitute against Salzburg and Juventus. He did not play against Stuttgart.
He did not convince, neither the coach nor the fans, and according to the aforementioned media outlet, before the start of the season he was informed that he would be sold. But he has not kept his side of the bargain. No offer satisfies him, and that has led Barcelona to this unpleasant situation.