Define 'legit closer' though, right? With the caveat that they need to be on like, one of the 8 teams that is out of it and would be willing to trade away their guy.
Reliever fWAR since the beginning of last year:
Clase - Not going anywhere
Tanner Scott - Rubber armed stud last year, 18 walks in 23 innings this year
Hoffman - Not going anywhere
Fernando Cruz - 34 year old who didn't debut until 2022 and has zero career saves
Bednar - Been discussed a bunch, 6.17 ERA this year, which is mostly luck driven but still a definitive step back
Hader - Just don't think there's an appetite for the remaining $85m or so on the contract
Clay Holmes - not going anywhere
Hunter Harvey - seems like a stud, team is going nowhere, not closing for them this year
Strahm/Brash/Jax/Munoz - all good teams, not going anywhere
Alexis Diaz - has been bad this year
Robertson - not going anywhere
Floro - good I guess? Doesn't scream 'legit closer', not closing for them, but all that just means cheaper
tldr: It's not like there's a ton of these guys out there