Nicolas Jackson has issued a public apology following his sending-off in Chelsea's 3-1 defeat to Flamengo at the Club World Cup. The incident occurred on Friday in Philadelphia, just four minutes after the Senegalese striker entered the game as a substitute. Jackson received a straight red card for a studs-up challenge on Ayrton Lucas, a rash decision that compounded a disastrous six-minute spell for the Blues, during which they conceded two goals and surrendered their lead.

Jackson's dismissal marks his second in only four appearances. He was previously sent off for striking Newcastle's Sven Botman with a forearm in a Premier League match last month. The red card against Flamengo further jeopardized Chelsea's chances in the Club World Cup and left the team shorthanded.

In an Instagram post, Jackson expressed remorse for his actions. "I want to say sorry to the club, the staff, my teammates, and all the fans watching, I let you down," he wrote. "Another red card… And honestly, I'm so angry at myself. I work hard every day to help the team not to put us in this kind of situation."

The striker also claimed that the foul was unintentional, stating, "I still don't fully understand how it happened. But one thing is clear: it wasn't intentional. Just a moment in football that went the wrong way." Despite this, Jackson took full responsibility for his actions, adding, "No excuses. I take full responsibility. I'll reflect, I'll grow, and I'll come back stronger for the badge and for everyone who believes in me. Sorry. Sorry, Sorry."

Chelsea manager Enzo Maresca acknowledged the impact of Jackson's sending-off on the game's outcome. While he refrained from heavily criticizing Jackson, Maresca noted, "Those six minutes completely changed the dynamic of the game... It's a little bit of a bad moment for Nico in these things. He knows very well that both situations were not something good for the team." Maresca also suggested the red card wasn't as clear-cut as his previous one against Newcastle.

Despite the setback, Jackson received support from former Chelsea defender Filipe Luis, who now manages Flamengo. Luis acknowledged the mistake but expressed confidence in Jackson's potential, stating that it was "a little mistake for a player who can be one of the biggest strikers in the world."

The incident provides an opportunity for Liam Delap, who was signed from Ipswich for £30 million, to compete for the starting position. Delap had made an impressive first start before Jackson's introduction. Jackson's suspension means he will miss the upcoming game against ES Tunis, giving Delap a chance to establish himself in the team.

Marc Cucurella defended Jackson, stating that he will learn from his mistake and it was bad luck. John Obi Mikel, however, criticized Jackson's actions as "stupid" and questioned his decision-making in a crucial moment of the match.