Havertz a long-time admirer of the Premier LeagueChampions visit Stamford Bridge on SundayChelsea’s biggest summer signing, Kai Havertz, has always been a keen follower of Premier League football, so he knows exactly what Jürgen Klopp has done for Liverpool in recent seasons. The Liverpool manager’s standing is so high in both Germany and England at the moment it would be a difficult subject to avoid anyway, but when Chelsea kick off their home campaign against the defending champions on Sunday Havertz will feel his real introduction to English football is properly under way.The 21-year-old admitted he was tired out by his debut exertions aga...