Chelsea fans slammed Kalidou Koulibaly on Twitter after their 1-1 Premier League draw against Nottingham Forest in the Premier League on Sunday, 1 January. Raheem Sterling opened the scoring in the 16th minute for the Blues before Serge Aurier equalized in the 63rd minute of the game.
Fans were disappointed with Koulibaly's performance and claimed that Trevoh Chalobah is a better option for Graham Potter at this point in time. Some termed the Senegalese's performance a 'disasterclass'.
Koulibaly arrived at Stamford Bridge at the start of the season from Napoli. While he has made 16 appearances for the club, he is yet to replicate his form with the Italian side.
Here are some of the best reactions across Twitter after Kalidou Koulibaly's performance during Chelsea vs. Nottingham Forest:
Chelsea have already signed a defensive reiforcement

Chelsea have signed Benoit Badiashile from AS Monaco for a fee of €38 million. The Blues have been thin on defense since the start of the season. Graham Potter's team, however, will benefit massively from the addition of Badiashile.
Potter recently spoke about what to expect from the Blues in 2023. He said (via football.london):
“We want to keep improving, that’s the simple answer. We’ve had a challenging time, some ups and downs in terms of the previous year. That is normal I think in any football club but we want to try to stabilise and improve.
"We want to make our supporters happy because we know the last few weeks before the break wasn’t nice for us. Results suffered and performances weren’t where we want them to be. So we have to do better than that.”
The Blues currently sit in eighth spot in the Premier League table with 25 points from 16 games. They will need to improve massively in a bid to secure a top-four finish and qualify for next season's UEFA Champions League.
The Blues, however, have qualified for the Round of 16 of the Champions League this season and will take on Borussia Dortmund upon their return to action in the tournament on 15 February.