The result came as a bitter blow to Man United after Chelsea had earned a late point against them last week. Rooney believes United must now win the Europa League to secure Champions League football next term.
“It will be difficult to qualify for the Champions League through the top four after today,” he said.
“The Europa League might be the only way for us to get into the Champions League. We weren’t aggressive enough and it’s cost us. We have to start again on Thursday [vs Midtjylland].”
United have now failed to win 17 of their last 26 games in all competitions.
The club made a huge mistake in not letting Louis van Gaal leave following the dismal run in December and it looks like they will punished for it with no Champions League football next season. The Europa League still has some quality teams left in the competition and it is hard to see United winning it in current form.