As a fan of both teams (Canes 1st, Leafs 2nd), I always struggle to come up with something. Pesce isn't worth the Marner, Nylander or even Kadri IMO...but I wouldn't trade him for the likes of Kapanen, Brown, etc... Canes don't need picks, don't need middling prospects, don't need a group of lesser players, etc.....they need good, scoring top 6 forwards. Leafs' top forwards are too high value to trade for Pesce and I don't see any guys below them that I'd personally trade Pesce for.
If Leafs had a forward slightly below Nylander level, that would be ideal, but I don't see that. A guy at the level of Sam Reinhardt would be closer value IMO.