In the cap world, the value is just higher at TDL.
I think Wild also needs Zuccarello, at least this year. Without him they'd either have to become a 1-line team, or play Kaprizov and Boldy essentially on separate 3rd lines.
Zucc has been good for the Wild, after his first injury riddled year. I think Wild fans take for granted how seamlessly he has fit with Kaprizov… not everyone can play with a star, but Zucc has done it very well, and helped Kap get settled off the ice, too.
Having said all that, MN has next to no chance of being a Cup content this year, and probably the next, even though the future looks bright after that. Trading Zucc at the TDL, perhaps with a bit of retention, makes a ton of sense if MN gets a decent return.
All this is supposing he doesn’t fall off a cliff, probably due to injury. Speed isn’t his game…IQ and puck handling is. Small, obviously, but has learned to take care of himself in traffic, and is surprisingly good in puck battles.