Bayern Munich take on Paris Saint-Germain in the Champions League last 16, a heavyweight clash between clubs who faced off in the 2020 final.
Here's a look at some of the key match-ups which could determine where the tie is won and lost ahead of Tuesday's first leg: Christophe Galtier v Julian Nagelsmann After a strong start domestically, PSG's form has dropped off considerably since the turn of the year and coach Galtier finds himself entering a critical stretch of the season without Kylian Mbappe.
The France star, the joint-leading scorer in this season's Champions League with seven goals, will miss the first leg with a thigh injury and there are concerns over Lionel Messi too after the Argentine hurt his hamstring during Wednesday's 2-1 loss to Marseille in the French Cup.
With Neymar yet to rediscover his best form since the World Cup either, Galtier must devise a plan that will allow a diminished PSG -- whose squad was also hit by a stomach bug at the weekend -- to avoid another European disappointment.