Bayer Leverkusen enter their opening Champions League clash at Feyenoord on Thursday as the first new Bundesliga titleholders since 2013 and coach Xabi Alonso is excited. Leverkusen dethroned Bayern Munich in the German top flight last term, not losing a game, but were beaten for the only time in the whole campaign in the Europa League final with Atalanta. Now back in the revamped Champions League, Alonso is pleased to be facing a famous old club and the 1970 European champions. “It is a great stadium, a cool atmosphere and a club with lots of history. But we are in good form. It will be a spe…