By Ewan Murray Manchester City are aiming to bring their run of three successive defeats to an end on Saturday when they visit Brighton & Hove Albion in the Premier League. The reigning Premier League champions followed up their defeat to Tottenham Hotspur in the Carabao Cup fourth round with losses away at Bournemouth in the Premier League and Sporting CP in the Champions League. Their crushing 4-1 defeat at the hands of the Portuguese champions has alarm bells ringing on the blue half of Manchester. Injuries have limited the effectiveness of the usually relentless Man City winning machine, w…