If we can conclude Tierney deal, then sell Monreal. Not a fan of Kolasinic, but we can deal with it the following season as we have other priorities.
Even Koscielny, I think we should cash in now. Great servant to the club, but don't think he'll cope with another full PL season. If he's around, we'll end up relying on him far too much with diminishing returns. It's why I'd prefer to keep Chambers with the squad at least until Saliba joins.