Mbappe idolised Ronaldo while growing up and after joining Madrid from Paris Saint-Germain last summer, has equalled the Portuguese striker's tally of 33 goals in his first season at the Santiago Bernabeu.
Mbappe's double took him to 33 strikes in 44 appearances across all competitions, the same number of goals as his idol managed in the 2009-10 campaign.
The French superstar did not train with his team-mates on Tuesday ahead of the game but coach Carlo Ancelotti said the striker would travel to San Sebastian.
The Italian coach said that he was never in doubt that the 26-year-old forward was going to find his form despite a slow start in the Spanish capital after arriving from Paris St Germain, playing in a more centralised role up front.
Speaking on a podcast hosted by former Brazil striker Romario, Neymar blamed a clash of egos for the failure of the three stars to gel during their spell together at the French club.
Busquets, Fernandez, Griezmann, Mbappe, Messi, Muller and more feature as FIFA looks at the World Cup winners set to play at FIFA Club World Cup 2025.
Flick's tactical approach, featuring an extremely high defensive line, also seemed ripe for Mbappe and Vinicius to pillage with their pace.
Swedish prosecutors on Tuesday confirmed an investigation had been launched -- without naming Mbappe -- following an alleged rape at a plush Stockholm hotel on October 10.
Los Blancos take on their rivals without the French forward, ruled out for three weeks with a hamstring injury.
The Euro 2024 favourites were left reeling after conceding just eight seconds into their game against Germany in Lyon last weekend, which they went on to lose 2-0.
"It is very difficult from a psychological and physical viewpoint to take part in two competitions like that one after the other, in the summer, without having any holiday," Deschamps admitted on Thursday.
"It's very simple, sooner or later, when it happens, we have to get used to playing without Kylian," Luis Enrique told the post-match press conference.
"Mbappe has communicated his decision to PSG but the terms of his exit are yet to be fully agreed. An official announcement is expected once the situation is finalised in the next few months," the report said.
"I was pleased with the whole match, I think my team is competitive each time and today was no exception," said PSG coach Luis Enrique.
Mbappe's contract with the Ligue 1 champions runs out at the end of June and he is free to sign an agreement to join a new club for next season.
Revel's young supporters had implored Mbappe to make the trip to the game played at Castres - Revel's humble stadium only has capacity for 2,000 fans in the Haute-Garonne south-western region - in a video posted on social media.
Barcelona forked out fees in excess of 100 million euros ($109.24 million) for Philippe Coutinho, Antoine Griezmann and Ousmane Dembele between 2017-19, but the club's financial issues mean they are unlikely to splurge on big new signings anytime soon.
Arsenal's search for a proven goalscorer to spearhead their challenge for a first Premier League title since 2004 could also loom large.
"We are not a couple but that is mainly because he doesn't want us to be," the Spaniard joked.