European Youth campaigns

From TheChels.info - The Chelsea Football Club Wiki

Chelsea's Youth teams have taken part in various European youth competitions over the years, but at the start of the 2010s the formalisation of more official structures began to take place.

UEFA Youth League

A UEFA Under-19 competition for the youth sides of clubs that are playing in the UEFA Champions League. It was founded in 2013.

Premier League International Cup

A Premier League Under-21 competition founded in 2014.

NextGen Series

A European club cup competition for Under-19s that existed for two seasons from 2011-2013. It was effectively rendered obsolete by the UEFA Youth League.