Gillins, who came to Wisconsin as a quarterback and early enrollee after being recruited by former head coach Gary Andersen, moved to wide receiver earlier this season and played in six games.
"It's been real UW, I had fun playing a little WR and special teams this year," Gillins said via his Instagram post.
"Now, I'm going back to what I do best. Unfortunately, that will not happen in Madison."
That statement implies Gillins wouldn't have been in much of a conversation at quarterback in 2016. Wisconsin has not formally commented on Gillins' status with the program as of Friday evening, though B5Q did reach out for clarification.
Gillins came in a highly-touted prep signal caller, as he was ranked the No. 4 dual-threat quarterback in the nation by 247 Sports, No. 9 by Rivals and No. 17 by ESPN.com. He was rated as a four-star prospect by all three services, and a three-star recruit by Scout.com
This will leave soon-to-be redshirt senior Bart Houston, redshirt freshman Alex Hornibrook and true freshman and early enrollee Kare' Lyles as the quarterbacks on the roster heading into the 2016 spring practices. Thad Armstrong, who would be a redshirt senior next season, was honored during Senior Day festivities against Northwestern before the Nov. 21 game against Northwestern.