There’s an argument to be made that Ronaldo peaked during his penultimate year at Manchester United. The sharpened point at the tip of Sir Alex Ferguson’s last great team was instrumental in the club’s capture of the Premier League—setting a single-season scoring record—while also scoring in a triumphant Champions League final against Chelsea.

Former Manchester United manager Erik ten Hag says Cristiano Ronaldo "let the team down" during his time in charge at the club and claimed the Portugal international did not prepare properly for games.

Cristiano Ronaldo is one of the most recognizable athletes in the world. He plays soccer for the Portugal national team and for Juventus in Italy.

The game's two biggest stars in the 2010s remain its top earners, according to the latest numbers from financial publication Forbes.

For two decades, the two soccer stars have dominated conversations about greatness. What does the future hold for both players post-retirement?