Thiago Silva was seen arguing with booing Chelsea fans after the team’s 1-0 Carabao Cup semi-final defeat to Middlesborough on Tuesday night.
The Blues were wasteful in attack and Hayden Hackney scored the only goal of the game as the Championship side come out on top in the first leg.
There were ugly scenes at full-time at the Riverside Stadium with the Chelsea team loudly booed by their away fans as they headed over to applaud them.
Silva, 39, was seen talking to a section of angry Chelsea supporters and trying to calm them down before he left the pitch.
‘Look, they have to go over,’ former Chelsea striker Jimmy Floyd Hasselbaink said as he watched the incident unfold on Sky Sports.
‘Of course, the fans are not going to be happy. But you always go to the fans and you have to make sure in the next game that you make things right.’
Quizzed about the ugly scenes after the match, Chelsea head coach Mauricio Pochettino said: ‘I didn’t see what was going on. Fans should feel disappointed but we still have 90 minutes to play.’
Chelsea host Middlesbrough at Stamford Bridge on January 23 in the second leg as they look to turn the semi-final around and reach Wembley.
The Carabao Cup is likely to be Chelsea’s biggest chance of landing silverware this term with the team not in Europe this season and struggling in the Premier League, although they are still in the FA Cup having beaten Preston on Saturday.
Liverpool face Fulham in the other Carabao Cup semi-final, with their first-leg meeting taking place on Wednesday.
Chelsea, meanwhile, return to action on Saturday as they host Fulham in a west London derby.