I can see there not being a market for Dumba that makes sense for MN anymore. Cap friendly has 9 teams with more than $2.4m in cap space: OTT, MN, Jets, DAL (still need to sign J Rob), CHI, AZ, DET, ANA, and BUF. These aren't teams that are a Dumba away from the Playoffs, let alone a long Playoff push.
So any trade for Dumba needs to have a lot of cap coming back. This likely is probably going to be in the form of a cap dump (+ picks), and not a player that makes MN better than it is with Dumba. There is also the 10 team NTC to get around.
Any Dumba trade needed to happen before/at the draft before teams got into FA and spent all their money. Now Dumba will be a TDL candidate if the season goes sideways for MN. If they are in contention they'll just keep him and let him walk/re-sign him after the season.
Really if any Dumba trade was likely to happen Kulikov wouldn't have been traded for nothing (Merrill is out to start the season).