Top spot in Group A will be on the line when Carlo Ancelotti's PSG host Porto in the Champions League on Tuesday.
Either the French giants or Portuguese powerhouses will be crowned group champions with both already assured of a place in the last 16.
Porto head into the clash at Parc de Princes undefeated this season in the league and need only a draw to top the group at PSG's expense courtesy of their better head-to-head record.
Ancelotti is coming under increasing pressure with his side slumping five points behind leaders Lyon in Ligue 1 after a shock 2-1 defeat at Nice on Saturday.
The Paris outfit endured another frustrating afternoon that saw France midfielder Blaise Matuidi sent off in injury time.
The Italian manager has won the Champions League twice before with AC Milan but knows he can ill-afford too many slip ups at the cashed-up club if he wants to keep his job.
Colombian duo Jackson Martinez and James Rodriguez have bagged 16 league goals between them in 10 matches this season and will lead the line for Porto on Tuesday.
Zlatan Ibrahimovic, meanwhile, has proven one of PSG's most influential acquisitions and will pose the main threat to Porto's goal with 13 of his own this season in Ligue 1.
In the other clash, Europa League bound Dynamo Kiev travel to face pointless Dinamo Zagreb, who cannot move off the bottom of the table.
The Croatian champions will be looking to finish on a positive note as the only side in the Champions League yet to pick up a point.