Look at his DC shoes, they are fucking ugly (most DC shoes are/were, the recent Miller/Kremer/Cole's seem to be a nice change) and I'm sure his salary requirements vs. what he sold isn't worth it.
Prod is old news, what, he's almost mid 30s or some shit? Koston old? BAs didn't sell well enough (and how many young bloods know or give a fuck about who he is), Janoski's had their run and he's all but faded into obscurity rolling around in money. Nike needs new blood with the fucking lunarlon running shoe shit, Nyjahs image is perfect for them.