Chelsea captain Gary Cahill believes David Luiz can set a good example for Andreas Christensen - to the benefit of the Blues.
Chelsea have not conceded in three games since the 3-0 loss at Roma, after which boss Antonio Conte dropped Luiz, one of the cornerstones of his Premier League title-winning team.
Denmark defender Christensen slotted in seamlessly in a 1-0 win over Manchester United and kept his place for last Saturday's 4-0 victory at West Brom.
Brazil defender Luiz returned for Wednesday night's 4-0 win at Qarabag, which secured Chelsea's place in the last 16 of the Champions League, giving Conte a decision to make for Saturday's trip to Liverpool.