Chelsea have work to do after losing the first leg of their Carabao Cup semi-final tie against Tottenham Hotspur.The Blues were beaten 1-0 at Wembley Stadium after Harry Kane’s penalty in the first half.The game wasn’t without its controversy, with referee Michael Oliver awarding the hosts a spot-kick after consulting VAR.The debate stemmed over whether Harry Kane was in an offside position when he was put through on goal.Fans were arguing on social media long after the full-time whistle blew. Clearly, VAR still has its kinks that need resolving.Kane tucked the penalty away and Chelsea were unable to respond, meaning they have it all to do when the sides meet again at Stamford Bridge on January 22.The Carabao Cup presents the best opportunity for Sarri to win his first trophy as a manager and that might explain why he was so emotional in the final minutes.

Sarri 'screamed' at Pochettino

Journalist Vaishali Bhardwaj was in attendance and she explained why the Italian was ‘screaming’ at Mauricio Pochettino and the fourth official in injury time.

Pochettino decided to bring Fernando Llorente on to waste some seconds and the striker was allowed to come on without too much of a delay.

However, Sarri was made to wait when he made substitutes earlier in the match.

“Sarri is screaming at the fourth official and at Pochettino too, which appears to be something to do with how quickly Spurs were able to send on Llorente while Chelsea, on the occasions they made substitutions, were left waiting a good few minutes to do so,” Bhardwaj, who works for the Evening Standard, wrote on Twitter.

Sarri was smiles at full-time

Sarri wasn’t angry for very long. Per Goal’s Chelsea correspondent Nizaar Kinsella, he smiled as he hugged Pochettino at the end of the match.

Chelsea were the most likely team to score in the second half and although Sarri expects the second leg to be difficult, he believes his team can progress to the final.

"Tottenham-Chelsea is a very difficult match for us, but also for them,” he said in his post-match press conference, per journalist Dan Levene.

“So it will be not very easy to win at Stamford Bridge.

“But after this performance, if we are able to play on the same level, I think we can do it."