Xabi Alonso said his return to Anfield was bittersweet after Liverpool thrashed Bayer Leverkusen 4-0 on Tuesday, thanks to a Luis Diaz hat-trick, to go top of the Champions League table. Cody Gakpo was also on target as the Reds maintained their 100 percent record in Europe after four games. 

Alonso, a Champions League winner during his playing days in the Liverpool midfield, turned his back on succeeding Jurgen Klopp to remain at Leverkusen after leading them to an unbeaten German league and cup double last season.