so looking at the squad (pulled the contract details from transfermrkt)

we were told the new club policy is that players werent going to be able to take their contracts under 2 years, either they had to sign up or they'd be sold. but that apparently has changed. for guys with less than 2 years remaining, we know the following:
sokratis - has said he wont be signing an extension. i actually thought his contract expired this summer, but apparently not?
mustafi - will probably be leaving on a free in 18 months
luiz - thank god he signed a short term contract, hopefully we can sell him for something in the summer, maybe he wants to go to china with the rest of his brazilian mates
ozil - will probably be leaving on a free in 18 months
auba - rumor is that hes pulled out of contract extension talks
after that group, the guys with 2+ years left (2 years this summer) would be
martinez - backup keepers arent worth a lot of anxiety/energy, but i dont trust him at all and wish we had someone better
kola - not sure what to make of him, hes not really a defender, but also not a great attacker. on decent wages, doubt we'd sell him
chambers - i think he'll merit a new contract
guendouzi - will definitely be in line for a new deal
lacazette - will be an interesting case, i dont see why he'd sign a new deal here or why we'd keep him, unless we sell auba and decide to use him at ST. he is 2 years younger than auba, but obviously not as good. i think id rather sell him and find a younger placement
then we have the crop of guys who are signed through 2023 and we can probably wait until summer of 2021 to address their contracts.
leno - should definitely get another contract and looks like our keeper for the next 7-10 years
holding - wish he could get fit and a run in the team
mavropanos - nothing player at this point
bellerin - wish he could stay fit, but we definitely need a new RB at this point
torreira - seems like he'll be off before 2023, but who knows, maybe freddie has plans for him. a new manager could be a factor here
xhaka - who knows at this point.
AMN - no need to worry about his contract for at least 2 years
nelson - same as AMN
saliba coming in next season can replace luiz in our squad setup. but we still need to sign a more senior (age 25-27?) centerback to partner him. hes going to need someone to guide him and mentor him, and i dont think we can rely on chambers to be that player. in fact, i know we cant rely on chambers to be that player, and i dont want him picking up all of sokratis bad habits too. i think sokratis or holding partnering chambers is the answer in the interim, but we need a good CB to replace luiz. and if we have the chance to sell mustafi, we should.
our midfield is still a big bowl of uncertainty. a month ago, i was certain xhaka would be off in january, now hes back in the team like nothing even happened and hes on a long term deal. same with torreira. ceballos will surely be heading back to madrid, so we'll need another midfielder. ozil's place in the team is very much a question mark.
and then of course you have our captain batman, and his backup robin, both getting into the back end of their contracts. will auba stay? if he goes, does laca replace him? do they both go and we bring in someone else? do we play martinelli at striker and look to bring in a left winger?
cant say the state of our squad fills me with a ton of confidence. we need to sort out the auba situation this summer no matter what, he cannot still be on the team with only 1 year left on his contract when the window closes. he either extends or we sell him. we have so many other deficiencies, we can't afford to let him leave on a free, unless kroenke has decided that money is no restriction and we're prepared to go on a £150m shopping spree to deepen the squad. which we know wont happen