FC Porto take on Paris Saint-Germain in one of the most enticing games of the round and one that is sure to have a huge say in who finished top of Group A.
Both teams won their initial matches comfortably and will have high hopes of going through as Group champions, but PSG have a hard task in getting past a Porto side that have a fearsome home record in Europe, losing only to Manchester United and Manchester City in the past four years. Porto have only ever lost one Champions League game against French opponents - although that was to PSG, in 2004.
Paris Saint-Germain have arguably not yet had value for the money spent on their side, but manager Carlo Ancelotti believes his side is starting to come together. The Italian said: "With Thiago Silva our defence has improved considerably. We're in a good moment, we have a good atmosphere in the changing room and this is the perfect time to play Porto."
Meanwhile, Porto boss Vitor Pereira refused to accept that Zlatan Ibrahimovic represented the only threat to his side: "We're not going to worry only about Ibrahimovic, because there are 11 players in a team. PSG have a great side, individually and collectively. But they'll be up against a great team too."
FC Porto injuries and suspensions
In doubt: Fernando (thigh injury)
Paris Saint-Germain injuries and suspensions
Out: Mathieu Bodmer (thigh), Thiago Motta (back). In doubt: Ezequiel Lavezzi (thigh), Jérémy Ménez (back.)
Porto almost have a clean bill of health, but PSG have a few injury problems, with their midfield particularly weak. Lavezzi and Ménez will both weaken their attack considerably should they miss out, but there is a good chance that one or both will feature.
Match Date/Time: 7:45 p.m. local, 2:45 p.m. ET
Venue: Estádio do Dragão, Porto, Portugal
TV: DirecTV Soccer (U.S.), Sky Sports Red Button (U.K.), Sportsnet World Plus (Canada), Sport TV1 (Portugal), Canal+ (France)
Online: Fox Soccer 2Go (U.S.)