Winnipeg would want something of more value for Laine. Duchene is good but he's been inconsistent. Tolvanen has yet to do anything in the NHL.

That's really not anywhere close to what Columbus would want for Dubois. Saros is a solid starting goalie but far from great or elite.

Everyone else declines.

I'm not sure why you'd be targeting Alnefelt, even if you're trading Saros. Askarov won't be coming over next season, but the Preds still have Ingram. If Saros were moved Ingram would get his chance with NSH, and the Preds would either re-sign Rinne for a year, or sign another vet UFA for a season.

Tampa Bay doesn’t let Alnefelt go anywhere JBB has said that publicly multiple times

Yeah Columbus, Tampa and Winnipeg all decline rather easily.