Briere is smart enough not to bid against himself, start with what you'd like, and let someone else negotiate an alternative deal good enough to get you to bite.
I don't think Risto will be traded until the summer of 2025, at which time he'll only have 2 years left at $5M with a cap that has risen for two years. It's just really hard to work out a TDL trade without retaining a bunch of money, which Briere would rather not do, and Risto, as long as he maintains his current play, might have more value a year from now with a shorter term. Maybe if you take Ceci back or another bad contract with similar term.
Walker is gone, they're not giving him a 3-4 year deal at $4-5M, not with Drysdale, Sanheim and Risto playing RHD, Attard on a now or never season in 2024-25 and Bonk a year or two away.
Seeler will go if someone offers enough.