Mateo Kovacic believes one of his Manchester City teammates deserves to win the Ballon d’Or. Manchester City’s aspirations to complete an unprecedented back-to-back treble lived on on Tuesday as they advanced to the FA Cup quarter-finals. Pep Guardiola’s team thrashed Luton Town 6-2 in an entertaining match at Kenilworth Road and they remain in strong positions in the Premier League and Champions League. Erling Haaland was the star of the show as he became the first player to ever score five goals in a single match twice for City following his exploits against RB Leipzig last season. But the N…