Pochettino said: "There are 11 players on the pitch that need to perform and the idea and philosophy. The problem is why we arrive in this situation, we are dealing with this, we know why but it is difficult to explain. We know why we are dealing with this. Today, I think is different to Newcastle or Manchester United. Newcastle a few days ago lose 3-0 and Everton was much better and credit for Everton but today I think we were better than Everton and we feel disappointed and frustrated because we weren't clinical in front of goal, or we didn't create more than we should
"After five months, we need to check that is the reality. If we do not receive enough, maybe we need to do something, some movement that is a thing to analyse with the sporting director, the owner and to change the dynamic and to improve in the second part of the season because we need to be more aggressive. It is not only to dominate and play well, it is to compete better but we cannot show this lack of concentration and concede the goal we conceded. We were punished too much today, too many positive things, I know it is difficult to talk about positive things in this position. We need to work and be tough and hope as soon as possible we arrive to the next game to play again.
"I think it's one thing, before we talk about performance or system or everything, what happens is little by little to change the mentality, to fight expectation and reality. Expectation is massive, Chelsea always expectation is to win the Premier League and after is the reality. The team is still fighting for different circumstances. Sometimes it's good, reality check, we need to fight. If we want to win it is to be more ruthless in our behaviour. Not because we are Chelsea we are going to win games, not because we are Chelsea we play well and deserve, that is our reality. If we want to go up, it's not only playing well, it's about being tough with ourselves. We are going to push the player, the players need to push themselves also.
"Then there's a massive assessment from the beginning of the season, from day one until today. When the transfer window opens, we will see what we can do. I will not say I need to ask for more player or less player but it's to see if the perception matches the reality. Is expectation here, reality here because we are missing something in the middle. That is the reality, maybe we need to improve our reality."