That is true but, in order to make that deal happend it would have to included one of the two(Lupul or Kessel) and Kessel is a better all around player this year then Lupul, faster too.
A straight up fair trade would be just Kessel for Nash but, i don't know if i want to see that happend.
I wouldn't, Kessel is younger and has a brighter future with the Leafs.