I have a feeling that someone is going to get relegated on goal difference this season. At the moment we look decent in that department but it could make the last game against Citeh more nerve-wracking.
But realistically, we may end the season with Chelsea, Arsenal and Citeh in 8 days, and quite possibly 0 points from them (although you never know). So to reach 40 we must aim for 7 points from the next six games. Very doable, but losing to Cardiff and Saints would make the table look a lot worse.