What cup that Cambridge United will participate in is called the Carabao Cup for sponsorship reasons?
EFL Cup The EFL Cup (referred to historically, and colloquially, as simply the League Cup), currently known as the Carabao Cup for sponsorship reasons, is an annual knockout football competition in men's domestic English football. Organised by the English Football League (EFL), it is open to any club within the top four levels of the English football league system – 92 clubs in total – comprising the top level Premier League, and the three divisions of the English Football League's own league competition (Championship, League One and League Two).
2015 Challenge Cup The 2015 Challenge Cup, (also known as the Ladbrokes Challenge Cup for sponsorship reasons) was the 114th staging of the rugby league tournament for teams in the European Super League, the British National Leagues and a number of invited amateur clubs.