"We wish him the best," Mullen said.
Lemons announced that he was transferring on social media Saturday night, less than an hour after the Gators' 27-16 loss to Kentucky, a game in which he did not have a carry.
In his announcement, Lemons said "I'm going to miss some of the boys I've been playing with for the past two years I've been here, I feel I've learned a lot from previous coaches that were here. I want to find a school that I can help to my best ability and actually use my talent that God blessed me with."
Lemons was among seven players suspended by Mullen for Florida's opener, a 53-6 win against Charleston Southern.
The suspensions were because the players failed to "live up to the Gator standard," a spokesman for the school said.
Lemons, who was No. 149 in the ESPN 300 when he committed in 2016, had 19 carries for 136 yards as a freshman.