Essugo, 20, is expected to be sidelined for a minimum of 12 weeks following a thigh injury sustained on international duty. Now, as confirmed by Chelsea on Tuesday afternoon, Buonanotte will step in to replace him ahead of his week’s game against Bundesliga champions Bayern Munich.
“Buonanotte will now replace Essugo in the Chelsea squad, per Article 31.14 C of UEFA's Champions League regulations, which was adjusted last week
“The Blues begin the league phase of our Champions League campaign tomorrow evening, as we take on Bayern Munich at Allianz Arena.”
Buonanotte expressed delight about playing Champions League earlier this season and will now complete his dream of representing The Blues in Europe’s biggest competition.
"It's a great first step in my career.
"I'm really happy to be here and ready to offer as much as I can to the team and the staff. I'm sure it will be a positive season.
"Of course, I'll get the opportunity to play in the Champions League for the first time, which will be a great challenge.
"I'm really looking forward to this season and hopefully I can help the club to achieve its goals."
Buonanotte made his Chelsea debut in the 2-2 draw against Brentford last Saturday, and could make an impact against Bayern in what is arguably manager Enzo Maresca’s biggest challenge yet.