"In the second half we tried, but it was too late and we couldn't score. When you lose, you learn.
“We have to analyse the game and improve quickly, because there is no time to think.
“We have to perform again in four days [against Tottenham in the second leg of the League Cup semi-final on Thursday].
"It was a good opportunity, we wasted it and now we have to work even harder to stay in a Champions League positions and win games. It has to motivate us."
Marcos Alonso says Chelsea made 'silly' mistakes against Arsenal (Image: GETTY)
Furious Blues boss Maurizio Sarri, echoed his defender’s words when he launched a scathing attack at his players in the immediate aftermath of the game.
"I'm really angry about the approach that we adopted today," the Italian said.
“It's an approach we can't really accept. I have to say, I'm extremely angry. Very angry indeed.
"This defeat was due to our mentality, more than anything else. This is something I can't accept.
Alonso went closest for Chelsea but his header came back off the post (Image: GETTY)
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Manager Maurizio Sarri was furious with his Chelsea players (Image: GETTY)
"This group of players are extremely difficult to motivate.
"This is not a team that is going to be well known for its battling qualities but we need to become a team that is capable of adapting, possibly suffering for 10 or 15 minutesthenplayingour own football.
"You can find yourself in difficulties from time to time, but we need to react to those difficulties a lot better than we did today."
Higuain was left out of the AC Milan squad to face Genoa on Monday and is due to have a medical in west London before moving on loan for the rest of the season.