It's a dim chance.
After Man Utd's win against Aston Villa, Liverpool's chances are becoming lower. Its not going to end, but just lower.
Around 7-8 matches left, anything can STILL happen.
It's left for the strongest to win the title now. Even though Man Utd is leading the league right now, a few draws would see them dropped to 2nd place.
Another thing is Chelsea, they are still trailing with single points. They still can upset the rest.
If Porto can drew with Man Utd, something must be wrong.