It was the scene of one of his most infamous scuffles that led to a courtroom apology and minor fine. Now Conor McGregor has returned to the bar where he assaulted a man in 2019 and is set to buy it. McGregor is about to buy the Marble Arch pub in his home area of Drimnagh, Dublin 12, for between €1.5 million and €2 million. The purchase will only make a tiny dent in his significant fortune first made as an MMA fighter as well as a second fortune from whiskey. This is the second pub McGregor has purchased in…