Meanwhile, Leverkusen left it late to win by a solitary goal on aggregate against Qarabag.
Now they will go head to head in the quarters, with Hammers striker Michail Antonio stating after the Freiburg game about possible opponents: We always think about winning it.
Whenever we get into Europe we believe and have got the confidence to win it. There's some big names out there obviously but one thing we know how to do is win games in Europe.
We got to the (Conference League) final last year and won it, the year before we got to the semis and felt like we should have done better. So hopefully this year we can do it again.
Many players go through their career without winning anything and by winning the Conference last year it gives you that hunger to do it again, especially me in my latter years."