Liverpool manager Jurgen Klopp has heaped praise on a player West Ham United sold last year. David Moyes‘ men are hard at work ahead of their big game against Bayer Leverkusen in the Europa League later today. The Hammers are 2-0 down from the first leg, and nobody is really expecting them to turn it around against Xabi Alonso‘s side, who were crowned as the German champions just a few days ago. West Ham need all the help they can get tonight, and one player who they sold last year could’ve perhaps made a huge difference if he was available now. Klopp has now raved about him after admitting he…