Yeah I'm actually pretty confident he will. With the Jade (or Cathy) dream n all, it's natural for people to forget
but in Troy's phone bio it was important enough for DPC to remind us of an open-ended mystery:
"Troy left the dorm in the middle of the Night. He is up to something."
Thus, somewhere along the line the mystery of "what he is up to" needs resolving. Whether it's a major role (e.g. Blackmailer) or minor role (e.g. sneaking off to meet Chad as a lover) remains to be seen.
PS. If you played guitar for him, it's also noted that he likes it. People who didn't will not have that of course, so this may also have an impact in the future.