Defense is still a weak point that Chelsea must improve and this was seen not only during pre-season but also in the competition that took place last season. Chelsea did not prioritize these positions to be improved and instead they bought several players who were not quite right last season so there were many positions that did not work optimally when they played. Cucurella showed his best abilities in pre-season but he did not control the defensive position himself without the support of other players.
This season Chelsea still has a lot of work to fix this position even though Chelsea may not have much time left, but overall Chelsea still has the opportunity to maximize their defensive position before starting their first match in this new season. I also quite regret Chelsea's condition last season which could not make significant improvements in their own team and it is very much hoped that this season Chelsea can be better through their revival in the Premier League.
This season Chelsea are just working hard to buy players and I think it's funny, piling up players will not be better, it will ruin the game with many options to determine the line-up, Chelsea's squad is now filled with 43 players, that's too much money spent and no benefit, I don't know how the management thinks whether they want to prove that they have a lot of money or want to invest in players
I have said many times this season Chelsea will be worse than before they are not a team capable of competing in the premier league at the moment. too many problems to fix.