If we compare PSG, Manchester United or Manchester City, Chelsea has the least number of star players. Moreover, the pace of Chelsea's game has slowed down a bit now. In January, Chelsea's management should appoint some experienced players to the team. Their defense is strong enough, but forward lineup needs some improvement.
when compared to other big teams, yes chelsea only have very few star players however When a team has a good depth of squad and team mentality that has been formed, I think big names or star player are not a big deal. and bringing in star players is not always the solution, some players or teams actually need time to adapt, seeing the condition of their squad at the time I think they are still able to compete in the EPL and UCL at the same time.