The collective heart rate of the Madrid faithful just dropped a few beats. After a concerning absence from Sunday's training session, Kylian Mbappé was back on the pitch with his Real Madrid teammates on Monday, allaying fears just in time for their monumental Champions League showdown.

The scare stemmed from a nasty elbow to the head during Madrid's weekend La Liga draw with Girona, an injury the star forward himself highlighted on social media. With the season on the line in Munich, his fitness became an instant global talking point.

His return to training is the boost Carlo Ancelotti needed. Real Madrid travels to the Allianz Arena needing to overturn a 2-1 deficit from a thrilling first leg at the Bernabéu, a match where Mbappé's brilliant solo effort provided their crucial away goal.

All signs now point to the French phenom leading the line on Wednesday. In a tie of this magnitude, having a player of Mbappé's caliber—a man built for legacy-defining nights in Europe—fully fit could be the decisive factor as Los Blancos chase another iconic continental comeback.