A pretty thorough look at roster decisions to be made over the next few weeks:
https://www.talknats.com/2021/10/06/money-juan-soto-contract-status-roster-moves/Fedde and Suero are arb-eligible and are non-tender candidates, as is Joe Ross. The only true FAs are Mercer, Parra, and Zimmerman (and Avila who is retiring).
There are a slew of borderline guys who are out of options: Sean Nolin, Kyle McGowin, Patrick Murphy, Austin Voth and outfielder Andrew Stevenson