Former UFC and Bellator champ Eddie Alvarez explains his motivation for cutting ties with ONE Championship Eddie Alvarez hasn’t fought in the United States since he knocked out Justin Gaethje nearly five years ago in a bout that was one of the best MMA scraps of 2017. According to the soon-to-be 39-year-old, the idea of wrapping up his MMA career without a return to competition in the U.S. is unacceptable. A former Bellator and UFC champion, Alvarez signed a free agent deal with ONE Championship in 2018. The Philadelphia-born and bred fighter made his debut with that promotion in 2019.…