Answer
When Kurt Zouma moved to West Ham United in 2021, he replaced Issa Diop in the starting line-up. Diop had been a regular at the club since his arrival in 2018, but he struggled to maintain his form in the 2020-21 season. Zouma, on the other hand, has been a solid performer for West Ham so far, and he has helped the club to improve their defensive record.