Thomas Tuchel believes Kai Havertz needs more time to adapt to the Premier League and the demands of playing for Chelsea but he was delighted with the 21-year-old's performance during the 2-0 win over Everton in the Premier League (March 8). In his post-match press conference, Tuchel also gave some insights into why Christian Pulisic has featured so little under him at Stamford Bridge.