Manchester City manager Pep Guardiola has warned his side's rivals that the English champions will only get stronger after holding off Liverpool to become the first side in a decade to retain the Premier League.

City came from behind to beat Brighton 4-1 on Sunday and take the title by just one point from Liverpool, despite the Reds amassing a club record 97 points. City could become the first side to ever win a domestic treble in England should they beat Watford in the FA Cup final next weekend.