It has been claimed that one Manchester City stalwart could become the highest-paid British player in history. City will be looking to secure their players’ long-term futures, especially with Pep Guardiola reported to leave the Etihad Stadium in 2025 and bid adieu to club management. After Guardiola departs the club, there would be a danger of a mass exodus from Manchester City. Man City star set to become highest-paid British player of all timeAs a result, it would be wise for the Sky Blues not to risk players running down their contracts and following him out of the club — if he leaves in 20…