We can take it on goal differenceWe need to win all our remaining matches and hope Chelsea:
Loses to United (A)
Draws with West Brom (A), Southampton (H), Everton (A)
We would win the League by 2 points, so technically they can beat Saints and we'd finish above them on GD.
Any draw or loss from us and it's over because all Chelsea's other matches are walkovers.
If they beat United, it's also pretty much done and dusted since I am not sure they could lose to any other team.