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).
2014–15 Football League The 2014–15 Football League (known as the Sky Bet Football League for sponsorship reasons) was the 116th season of the Football League. It consisted of the usual 72 clubs, with the new additions being Luton Town and play-off winners Cambridge United, who returned to the Football League for the first time since 2005, replacing Bristol Rovers and Torquay United from League Two.