Thomas Tuchel has been sacked by Chelsea just weeks into the new season.Chelsea news, exclusives and analysisIn just 20 months and 100 games, the German certainly made his mark, winning the Champions League and Club World Cup, but a recent dip in form, plus reported fallouts with players and the ownership has prompted his shock dismissal.As is the case whenever there is a change of management, certain members of the squad will benefit but others will struggle as tactics, training and transfer policy are flipped on their head.With that in mind, Metro Sport takes a look at the biggest winners and losers of Chelsea sacking Tuchel…Perhaps Tuchel’s biggest weakness at Chelsea was his inability to get the best out of Chelsea’s many talented forward options.Hakim Ziyech and Christian Pulisic have been the most notable strugglers making just a combined 21 goal contributions across 81 Premier League appearances.Kai Havertz has also failed to hit the lofty heights that were expected of him, save for a few special moments, but perhaps under a new manager the trio can recapture the magic.And should the new manager suit his style-of-play, record-signing Romelu Lukaku could (finally) make a triumphant return at the end of his loan at Inter Milan.Tuchel almost exclusively lined Chelsea up in a 3-4-3 formation, which not only got the best out of attacking full-backs like Ben Chilwell and Reece James, but also prolonged the careers of the older centre-backs, namely 37-year-old Thiago Silva and 33-year-old captain Cesar Azpilicueta.However, should the new management opt to revert to a back-four, the pair’s lack of pace will be exploited, as will summer signing Kalidou Koulibaly who is 31.The addition of 21-year-old Wesley Fofana has eased