The quarter final stage is starting by April 10.

My favourites to advance:
Frankfurt,
Athletic Bilbao,
Lazio and
Lyon.
Yeah I'm really keeping English teams out of the Europa League in this stage. Because they both face a bigger challenge this time. Lyon and Frankfurt both are playing really great. Much more productive than the English teams I think.
I'd like to see Fenerbahçe in Rangers' place now but anyway... Rangers isn't much of a challenge for Athletic Bilbao. Lazio are way ahead of Bodø/Glimt in strength. They shouldn't just underestimate them that's all.
I also agree with your assumption, because the 2 English league teams that are currently in the quarter-finals I think have a very big potential to get a defeat, because we can see for ourselves the performance of the two teams from the English league (Manchester United and Tottenham) both are really in a very bad zone, which is in the teens in their domestic league. So for this I also agree with your assumption. Because if we talk about Lyon, Lazio, Frankfurt, and Bilbao, these 4 teams have a very good reputation in their respective domestic leagues. So it's no wonder that the 4 teams are able to enter the semifinals in the European league. Because in the preliminary round, the 4 teams have given very satisfying results, so with that I think it's only natural that these 4 teams enter the semifinals. And besides that, I personally have a prediction that Lazio will be able to enter the final round, because as we know in the preliminary round, Lazio managed to become the leader of the standings and this was obtained by Lazio, because their performance was really great. But as for who the opponent will be, I personally don't have a prediction yet.