Mayo has less than a year remaining on his ban for violating the league's substance abuse policy.
"I want to go back to what I left (in Milwaukee)" the 29-year-old Mayo told The Crossover. "I was real close with (coach) Jason Kidd. ... I had great relationships with Giannis (Antetokounmpo) and Khris Middleton. I felt like I let them down, cheated them for two years. They paid me $8 million to be, in my eyes, a subpar player. They invested millions of dollars for me to be on top of my (stuff), and when you're not on top of your (stuff), it shows. I'll be 30 next summer. If they just give me the chance, I can make it up. I owe them."
Mayo told The Crossover that the drug that led to his discipline was not a hard drug, rather marijuana. He also admitted that he abused prescription pain medication.
The 6-foot-5 Mayo averaged a career-low 7.8 points as well as 2.9 assists and 2.6 rebounds during his third and final season with the Bucks.
Mayo was originally a No. 3 draft pick of Memphis, where he spent the first four seasons of his career. Mayo joined Dallas for one season before signing with Milwaukee.
In his career, Mayo has averaged 13.8 points, 2.9 assists and 3.1 rebounds.