Veteran MMA fighter Melvin Manhoef is set to retire after Bellator 285 in Dublin, Ireland. The light heavyweight will have his final fight against fellow MMA veteran Yoel Romero in the co-main event on Sept. 23. The fight was originally scheduled to take place in May but Manhoef pulled out due to a hand injury. Now, the 46-year-old will return to the octagon for the first time in nearly two years. Manhoef spoke with the media at the Bellator 285 pre-fight press conference, where he announced his intentions to retire. It will be the last fight in his 26-year career.…