Turning your back on Pep Guardiola might just be considered the footballing equivalent of treason.
But this is what Kalvin Phillips has to do if he wants to re-ignite his career at the highest level of the English game.
Phillips appeared to have the world at his feet when he helped England reach the final of the Euros in 2021. He was one of the stars of the show and within 12 months had secured a dream move to Guardiola's English champions. Phillips had his pick of clubs and found it difficult to leave his hometown one in the shape of Leeds, where he had become an iconic figure.