Unless he has had direct contact from Man Utd saying he will get it next i don't think he will run the risk of taking it for granted that the job is his. I mean Sir Alex keeps putting off his retirement so for all we know it coould come 3-4 years down the line.
Newcastle is a club with some good quality players and a chairman who will give O Neil the funds to improve the side and take them to the next level, something that was lacking atCeltic after the
UEFA cup run.
I think it could be a good move for both parties to be honest.