An Auburn official told Inside the Auburn Tigers on Friday that Aycock is no longer a Tiger due to a "violation of team rules."
In Auburn's A-Day spring football game, he carried the ball five times for 16 yards and scored a touchdown on a six-yard run.
A Class 5A Florida All-State quarterback at Chamberlain High School in Tampa as a senior, he originally committed to Georgia Tech to play quarterback. However, when offered by Auburn to play running back he reconsidered and chose the Tigers.
Incoming freshman All-American Michael Dyer is expected to push for playing time at running back this season.
As a senior in high school Aycock rushed for 1,406 yards and 28 touchdowns and hit 77-152 passes for 1,491 yards. He won the Guy Toph Trophy as the top player in Hillsborough County while leading his tea to an 11-2 record.
The brother of NFL player Dwight Smith,, he finished high school with 57 rushing touchdowns, which was a county record.