Johnny Manziel has issued an apology to his fans on Twitter and is vowing to return to professional football.

The former Heisman Trophy winner and Texas A&M star used social media on Monday to ask Aggies fans for forgiveness and express his love and devotion to the school.

The Cleveland Browns drafted Manziel in 2014, but he has struggled on and off the field since. Two agents have cut ties with Manziel after demanding he get a second round of treatment for drug and alcohol use since the 2015 season ended.

He is currently a free agent.