I think TJ will at least be on a practice squad this year. I think he could stick as a reserve WR for a while, but am not convinced he is starting caliber.
Looking at mock drafts post-combine, they have DJ all over the place. I've seen him projected at #13 to Miami, #28 to the Chargers (which would actually be a great spot for him to back up Rivers for a couple years and would put him on a team I can actually pull for), to out of the first round entirely. Of course, I put minimal stock in these mock drafts because every single one I saw had the Panthers passing up on NC State's Bradbury to address the need at center, usually in favor of a different spot on the OL or a defensive end. If Bradbury is there for the Panthers and they pass on them they are absolute fools and I'm going to be close to done with the franchise.