Really of the three GC key forwards (Lynch, Dixon and Day) I have him Day well behind the other two. He doesn't look to have any forward nous and relies heavily on his athleticism to make an impact. Could be a very good CHB though
Have you watched him this year? He's playing as a lead up CHF and creating so many opportunities for Lynch and now Dixon that he's back. He's excellent in traffic, he'd probably have the most score involvements for KPPs at the Suns this year and he's hitting the scoreboard when it's his turn. With a set shot like his, why would you want him to be a CHB?
You have to watch how well that Suns forward line works together. Unlike a lot of the younger forward lines in the comp, each player knows when to leap, when to stay down, when to lead their defender out away from the dangerous area. Lynch is also having an excellent season, but a lot of that has to do with Day's play.