Real Madrid were held to a goalless draw by relegation strugglers Cadiz in the La Liga fixture at Santiago Bernabeu on Sunday.
Earlier this summer, Cristiano Ronaldo made a sensational return to Manchester United from Italian giants Juventus.
The Champions League last-16 draw was redone after mistakes at the first attempt saw Manchester United paired with Villarreal.
Real Madrid defeated Atletico Madrid 2-0 in the Madrid derby to strengthen their already commanding position in the La Liga title race.
Cristiano Ronaldo has scored 800 goals in his career during Manchester United's win against Arsenal in the Premier League.
The Spaniard joined PSG on a free transfer in July after leaving Real Madrid but has been unable to play due to a long-running calf injury.
The Wales captain has not played since 8th September when making his 99th appearance in a goalless draw with Estonia in Cardiff.
David Alaba started the counter-attacking move and blasted a left-footed shot past Barcelona goalkeeper Marc-Ander Ter Stegen.
We are now halfway through the group stage of the 2021-22 UEFA Champions League. Here are the major talking points from Matchday 3.
According to a report by Italian outlet Calciomercato, apart from Arsenal, Real Madrid are also interested in the Everton striker Dominic Calvert-Lewin.