Arsenal will limp home. Under Wenger they have a blistering plan A, but relatively little to fall back on.
Man U are more dynamic than that and have a more versatile squad.
Don't write off Chelsea, they have a couple of easy of easy weeks and then get down to business. If they can get revenge over the mighty Tottenham, then they face Arsenal and United at home, with United also having to play Liverpool and Arsenal before the end of the season.
This is very much a three horse race and Chelsea haven't played anywhere near their best. Despite that I think they have the best natural goalscorer in Drogba.
A lot will depend on when these teams drop out of Europe.
I'm looking at Chelsea's $6.00 odds on Centrebet at the moment...