Manchester City are into the quarter-finals of the FA Cup, after thrashing Luton Town 6-2 at Kenilworth Road. There were masterclasses from Erling Haaland and Kevin De Bruyne, with the Belgian assisting his teammate four times in tonight’s game. Bernardo Silva also got in the act in assisting Haaland, before Mateo Kovacic scored a sixth for City. Luton were spirited, and found the net twice to their credit through Jordan Clark, with his first goal being a truly wonderful strike. But ultimately, the quality of the visitors told. Lee Dixon was left in awe of Haaland like everyone else – but ther…