Both games kick-off at 8pm.
Manchester City face the prospect of trying to stop Paris Saint-Germain's feared front three when they meet in the Champions League group stages tonight.
Lionel Messi, Neymar and Kylian Mbappe are expected to line-up against last season's runners-up in the French capital.
Barcelona legend Messi is yet to score since moving from the Catalan club in the summer.
Liverpool aim to maintain their winning start to the group stages this evening away to Porto.
Jurgen Klopp's team began their campaign in this season's competition with a 3-2 victory over AC Milan at Anfield.
Liverpool have a good record in Portugal against this evening's opponents - having won their last two visits.