Not a Flordia fan but ill answer for fun. Keeping in mind I dont see any way a trade can be made where both fanbases are happy.
Lundell is a potential stud and cost controlled on a playoff team. Thats huge, not even considering that he's a C. This would need to be addressed. Maybe by taking back salary and giving Florida a replacement prospect or player to fill the spot of Lundell.
Id ask for something like:
From Arz- Chychrun & Prospect
From Fla- Lundell + Salary dump
Idk the teams that well so wont give you an offer but id use that as a template. Also aware that both fanbases probably hate the template dw.
See, I'm thinking something that makes Florida THE cup favorite. Arizona can't replace what Lundell brings for Florida, if we could than we wouldn't make him our absolute target. We can however replace some of what he does while providing a significant upgrade on the blue line.
Chychrun + Jenik (lower ceiling center prospect that could make the jump next season, 2c ceiling vs 1c. Most of us Coyotes fans see him as a Marchand lite kind of player) + Larsson + Boyd for Lundell + prospect of similar value to Jenik but in a position of excess for Florida + Vatrano (cap ) + Nutivaara (cap) + Hornqvist (if it's necessary, maybe a handshake deal for him to be sent to Arizona in the offseason for a late 2nd as I assume he's still a valuable piece for this playoff push).
That's roughly where I'm thinking vs the reported return. Lundell is showing himself as a pretty major piece, this could be similar to the Johansen for Jones trade but I think expanding on it and replacing some of the upside to Lundell with Jenik could be very beneficial to Florida making multiple cup runs, or even victories. Larsson and Boyd have been exceptional additions to a bad Arizona team, they would push Florida's depth through the roof, allowing for countless line combinations and breathtaking injury insurance.
Chychrun - Ekblad
Forsling - Weegar
Montour - Gudas
Carlsson, Priskie
or
Weegar - Ekblad
Chychrun - Gudas
Forsling - Montour
Carlsson, Priskie
That's a Stanley Cup looking blue line. Florida has a strong top 6 with pretty good scoring depth, I don't want to damage that too much in the trade but it's pretty impossible to not give up a little bit up front for the significant blue line upgrade.
Florida can run Reinhart, Bennett or Verhaeghe as top 9 centers or wingers, slot Boyd or Larson in at 3c or as bottom 9 wingers, and still have Jenik come in next year and provide an aggressive middle 6 center presence at league minimum. Lundell is a big piece to lose, but the damage can be fully negated through appropriate player acquisition up front and the huge blue line upgrade.
That's where my head is at though, Florida may not see things this way.