While he went undrafted, KT Harrell will have a shot to make it into the league.
— Alex Kennedy (@AlexKennedyNBA) June 26, 2015
While I haven't seen anything official on it, the amount of retweets about it by KT himself on Twitter is a strong indication that it's true.
EDIT: As I was doing the final edits on this post, Brandon Marcello of AL.com confirms the news with KT. This is why you should always check Twitter one more time before hitting publish. So, there you go.
Just chatted with @KT_Harrell1.