All eyes are on a finely poised Group H as the Champions League returns this week following the international break.
Paris Saint-Germain, finalists last season, are in trouble after defeats to Manchester United and RB Leipzig, who they face again on Tuesday.
United s fine early European form took a hit when they lost to Istanbul Basaksehir, however, meaning all four teams are separated by just three points.
Elsewhere, Barcelona will hope their impressive Champions League results continue to provide an effective distraction after their latest LaLiga setback.
Juventus, Chelsea and Borussia Dortmund are all also in action as we break down Tuesday s key matchday four fixtures with Opta data.
Paris Saint-Germain v RB Leipzig: Milestone in sight for…