Chelsea's second signing Kalidou Koulibaly spotted in Blues shirt for the time after completing his transfer

Chelsea have completed their second summer signing this transfer window.

It's been gathered that Kalidou Koulibaly has put pen to paper on a four-year deal from Serie A side Napoli.

The Senegal international was spotted in Chelsea's shirt and a cap as he joined the team in Las Vegas in USA.

The Senegal international, 31, joined Napoli from Genk in 2014 and made 317 appearances for the Italian side, Napoli.

Koulibaly becomes Chelsea's second signing since the Todd Boehly-led takeover after Raheem Sterling joined the club in a £50m deal.