EXCLUSIVE from Graeme BaileyAfter losing 4-1 to Sporting CP on Tuesday evening, Manchester City slumped to three straight defeats in all competitions – something that’s usually unheard of under Pep Guardiola. Man City are only two points behind Liverpool in the Premier League (and five ahead of Arsenal) – there’s no real need for a post-mortem just yet, but Guardiola will demand an improvement. That being said, City were fairly quiet in the transfer market this summer given that Julian Alvarez left for big money. And perhaps that will lead to bigger spending next summer, whether Guardiola is i…