Chelsea's Kai Havertz struggled to adapt to the demands of the Premier League following his arrival from Bayer Leverkusen but the Germany midfielder said he has finally settled down and sees a bright future for himself at Stamford Bridge. Havertz has managed just one goal and two assists in the league since arriving from Leverkusen for £71 million ($97.80m). The 21-year-old was laid low by Covid-19 in November and was then used mostly as a substitute by new manager Thomas Tuchel before picking up an injury last month. "It's been a tough season," Havertz said after Germany's 1-0 win over Romania in Sunday's 2022 World Cup qualifier. Havertz was one of the stars in Bucharest, setting up Serge Gnabry for the winner, but it has been a different story at Stamford Bridge. "I know that things haven't been going smoothly," he added. "But I think that's normal when you first go abroad. It takes half a year or longer to adjust. "I think that things are going well right now so I don't want to overthink those negative impressions from the past. I am positive and hope that the next weeks will be every bit as good." Chelsea are fourth in the league with 51 points and host West Bromwich Albion on Saturday after the international break.