Just as Real Madrid were starting to come out on the other side of their injury woes this season, they now must worry about Mbappé's status before making the journey to San Sebastián. Los Blancos have made just one Copa del Rey final in the last decade, and now with a trip to Sevilla on the line, they could be without their best player.

Ancelotti suggested Mbappe could reach Ronaldo's heights after his hat-trick against Manchester City, but is that fanciful?

Last year's champions will face either Bayer Leverkusen or city rivals Atletico Madrid as they seek a record-extending 16th title.