A look at what’s happening in European soccer on Wednesday:CHAMPIONS LEAGUELiverpool starts as the big favorite against Villarreal in the first leg of the semifinals but won’t be underestimating the Spanish team, according to manager Jurgen Klopp. And for good reason. Villarreal has already eliminated European royalty in Juventus and Bayern Munich in the knockout stage. Up next is a team on course for an unprecedented quadruple of major trophies in the same season. Liverpool has won the League Cup, is in the FA Cup final and is a point behind Manchester City in the Premier League title race.