Xabi Alonso faces an emotional return to Anfield on Tuesday when his Bundesliga champions Bayer Leverkusen face Liverpool in the Champions League. Alonso played for Liverpool 2004-2009 and scored in the epic 2005 final in Istanbul where Liverpool beat AC Milan on penalties after fighting back from 3-0 down. The Spaniard was part of the rumour mill as a potential candidate to succeed Jürgen Klopp at the Reds in summer before the job went to Arne Slot. He now returns with Leverkusen for what he said is a big occasion. “Champions League at Anfield, it can’t get much better. They are one of the be…