Hear what Kalidou Koulibaly had to say on making his Premier League debut as well as looking ahead at Chelsea's upcoming London derby against rivals Tottenham Hotspur on Sunday.
RB Leipzig have signed former striker Timo Werner from Chelsea on a four-year deal.
Chelsea put a troubled pre-season behind them to start their Premier League campaign with a 1-0 win at Everton on Saturday thanks to Jorginho's penalty.
Tottenham delivered on their pre-season hype by thrashing Southampton 4-1 on Saturday, while Chelsea also got off to a winning start as Jorginho's penalty earned a 1-0 win at Everton.
Desperate to close the gap on Manchester City and Liverpool at the top of the Premier League, Chelsea, Tottenham, Arsenal and Manchester United have spent the close season aggressively pursuing new recruits with varying degrees of success.
Watch as Chelsea attacker Mason Mount reacts to watching Kasi Football.
Gabriel Jesus continued his impressive pre-season form with another goal as Arsenal thrashed Chelsea 4-0 in a friendly in Florida on Saturday.
Another chapter in the personal rivalry between former Liverpool teammates Sadio Mane and Mohamed Salah will play out in Rabat on Thursday when the African Player of the Year is named.
Chelsea, prepping for their first Premier League season since Todd Boehly's consortium bought the club, beat Mexico's Club America 2-1 in an international club friendly in Las Vegas.
Senegal international defender Kalidou Koulibaly has signed a four-year deal with Chelsea from Serie A club Napoli, the Premier League club announced on Saturday.