Arsenal boss Arsene Wenger knows they could tumble to fifth place if the final round goes against them.
Should Arsenal lose at West Bromwich Albion - which will be Roy Hodgson's final match before taking charge of England - and results elsewhere go against them this time, then the Gunners could even end up down in fifth place.
Wenger conceded: "This was a massive blow. The only question for us is what will be the price for it.
"Will it be us out of the Champions League or not?
"We don't know because fourth is not Champions League, it is a qualifier at best, and maybe not at all if Chelsea win the Champions League.
"We will have to see - then we can analyse what will be done, but we are not out of it yet."