Chelsea must avoid unnecessary disciplinary cards.

Tonight's match against PSG presents personnel issues Liam Rosenior needs to address. These are not only injury cases but also the challenge of managing Chelsea players at risk of receiving disciplinary cards.

Chelsea's current injury list now features only two prominent names: Levi Colwill and Jamie Gittens. While Colwill has yet to set a return date after a pre-season ACL injury, Gittens has also been long-term confined due to a hamstring injury sustained in the win over West Ham back in January.

The midfield duo Dario Essugo and Romeo Lavia have gradually returned this month. Lavia came off the bench in the win against Aston Villa and started in the FA Cup match against Wrexham. Essugo, substituted in during the Wrexham victory, provided the assist for Joao Pedro's goal that sealed Chelsea's 4-2 extra-time win. However, both are likely to be on the bench as Liam Rosenior has ample midfield options. Regarding Estevao, an injury in the draw with Burnley caused the Brazilian midfielder to miss Chelsea's last three matches. Although Rosenior confirmed Estevao has resumed training, he need not rush to deploy him on French soil tonight.

Beyond health concerns, what other issues should Rosenior be mindful of? The risk of Chelsea players receiving unnecessary disciplinary cards. Up to now, the Blues have had nine instances of players being sent off across all competitions. Among these nine red cards, only one occurred in the Champions League, when Joao Pedro received two yellows in the qualifying match against Benfica last October. However, this does not mean Rosenior's squad is immune to adding more red cards from the Champions League.

The first-leg encounter with PSG in Paris promises to be a tense showdown with no room for uncontrolled actions or unwise fouls. Chelsea currently has two players at risk of missing the second leg if they receive another yellow card: Andrey Santos and Enzo Fernandez. Both midfielders have already accumulated two yellow cards in the Champions League since the start of the season. The scenario of both starting tonight against PSG is entirely possible. Rosenior will certainly need to remind this pair to exercise caution in duels with PSG players.

The decisive factor for Chelsea's success in the first leg at Parc des Princes lies not only in Rosenior's tactical approach. The West London players must demonstrate cool heads and the composure befitting a continental club of repute. This is what they displayed in the FIFA Club World Cup final, and Chelsea supporters hope to see it replicated once again.