What happens in the domestic league does not guarantee the same thing will happen in the Europa League competition for team performance, as happened to Leverkusen last season so what happened to Athletic Bilbao in La Liga does not guarantee anything for them to win the Europa League.
What must also be known is that the Europa League competition is very fierce because several teams have the same strength so that no team is too favored excessively and I think that also applies this season from all the teams in the quarter-finals now have the same hope of becoming champions so it is quite difficult to predict.
Domestic Leagues always have no impact on European competitions because many time teams won title here and not able to keep their performance in their own leagues while many teams worst here but done impressive in domestic leagues.
Currently, few teams are doing good job here with any team can go through for win Athletic Bilbao and Lazio are good but no one can ignore Tottenham and Manchester United because they are also on good run with their performance is at the top level from start of event. With the current formation look like these four teams are going to have spots in last four but still surprises are possible which are beauty of this league but still predicting about winner is not easy because now it's all about match day performance.