Calgary would likely be more inclined to move Mangiapane than Dube.

Maybe a deal involving Mangiapane plus a solid prospect plus a 2nd would be more palatable for both fanbases.

Mangiapane was injured last season and it affected his style of play and shot. Following his surgery he likely comes back to his old ways and starts potting goals again on a regular basis.

Columbus and Brodie both say no.

I doubt that. Mangiapane is the better player. The only reason to move him over Dube is if Dube is willing to sign like a 5+ year extension for cheap

A hard combo but achieved. Made the Leafs worse this season, while trading away futures.