Paris Saint-Germain, who face a congested calendar after advancing to the Champions League quarter-finals on Wednesday, are trying to postpone their French Cup semi-final.

PSG are set to face Saint-Etienne on April 8, a clash squeezed between a showdown against arch-rivals Marseille three days before and the League Cup final against Bastia five days later.

The Champions League quarter-final, set for April 14 or 15, adds to an already busy schedule and will be the Ligue 1 giants' fourth game in just 10 days.

According to a PSG source, the club are in the process of making a written request for a delay to the French Football Federation.

PSG are gunning for an unprecedented quadruple as they are still in both Cups, the Champions League after knocking out Chelsea, and Laurent Blanc's side are placed second in Ligue 1, one point behind leaders Lyon.

The Qatar-backed club overcame the early dismissal of star striker Zlatan Ibrahimovic at Stamford Bridge on Wednesday night to knock Chelsea out on away goals after extra time.