League One and Two clubs asked to submit proposals . six League U21 sides would enter the Football League pyramid . Addition of ' reserve ' teams into the League pyramid was rejected last year . New format would see eight teams in group stages followed by knockout .
League One and Two clubs asked to consider proposals . Premier League U21 sides would enter the Football League Trophy . Addition of ' B ' teams into Football League pyramid was rejected last year . New format would see U21 teams in group stage followed by knockout .