West Ham, revealed they paid an undisclosed fee, reported to be around £25million, to land the France centre-back, Kurt Zouma.
The early Premier League leaders West Ham, signed defender Zouma, from London rivals Chelsea, on a four-year deal.
Zouma, 26, won two Premier League titles, the Champions League and the EFL Cup, during his time at Stamford Bridge.
Zouma, capped eight times by his country, made 151 appearances for the Blues following his move from Saint-Etienne in 2014.
Zouma has spent loan spells with Everton and Stoke City and he is on the move again in a permanent switch to join David Moyes’ high-flying side.
“I’m very happy and very proud,” Zouma told the Hammers’ official website.
“My conversation with the manager went very fast. I just felt like he really wanted me to come and join the team, especially a good team that’s started the season very, very well.
“With the great season that West Ham had last year, that gave the team a lot of confidence to improve this year – and I want to help the team do that.”