Pep Guardiola has yet to decide whether to pick Willy Caballero or Claudio Bravo for Manchester City's Champions League clash with Monaco.
Ligue 1 leaders Monaco had to come from behind to draw 1-1 away to Bastia on Friday evening and missed the chance to go six points clear.
Monaco consolidated their position at the top of Ligue 1 with a 2-1 win away at Montpellier, where they finished with 10 men.
Radamel Falcao scored two second-half goals as Monaco moved three points clear in Ligue 1 with a 3-0 victory at home to Nice.
Arsene Wenger admits Arsenal are following the progress of Monaco's Kylian Mbappe and says he "could be another Thierry Henry".
Bernardo Silva struck a stoppage-time equaliser to clinch Monaco a 1-1 draw against Ligue 1 title rivals Paris Saint-Germain.