Desire Doue was one of the teenage stars of last season as he helped Paris St-Germain win the Champions League for the first time.
Barcelona's Lamine Yamal, another teenager, was named in the team of the competition.
But which young stars will be impressing in this year's tournament?
The Champions League is back - with matches this week on Tuesday, Wednesday and Thursday. And BBC Sport has taken a look at 10 teenagers that will be aiming to make their mark this season.