Chelsea should replace Cucurella with someone else, he made two blunders which resulting two goals conceded. Sancho played really well in this match, I think Chelsea should bring back Mount, he was a great attacking midfielder, so he can be a substitute in case Palmer is absent.
He is a Euro champion and I don't say he is a too bad player, but I agree with you that in this match, his performance is terrible. He made two big mistakes that cost Chelsea two conceded goals and in other matches, maybe Tottenham will destroy Chelsea after leading 2 - 0 like this. Chelsea managed to come back and beat Tottenham convincingly but Cucurella must be responsible for his individual mistakes in this match. I don't know what happened on field but is it because of the field condition like it is too wet and too slippery.
Leicester City also great to equalize the points, Brighton is one of great team, it was not an easy match.
Leicester City fight hard and they deserved with one point from a strong opponent like Brighton. In this season Leicester City will have to work very hard to find their chance to stay in Premier League and avoid a relegation back to Championship. They can do that, if they continue to show their strong mentality in coming matches. They are not a strong team in Premier League, but to avoid relegation, they can.