It's not bedwetting to worry about United. They are six behind, two games more to play. More importantly, they're playing fairly well now. We're also playing ok, but hardly spectacular either. We could definitely slip.
Arsenal competing for fourth would be a minor miracle now though, so I see it as a five team mini league.
Looking up, Spurs are playing far too good for us to have a chance now. Expecting them to slip now seems a bit silly after last season.