The 2017–18 A.F.C. Bournemouth season is the club's 3rd consecutive season in the top flight of English football and their 128th year in existence, this  season Bournemouth will participate in the Premier League as well as the FA Cup and EFL Cup, historically, and colloquially, as simply the League Cup, currently known as which event, for sponsorship reasons, is an annual knockout football competition in men's domestic English football?