I think they'll do alright this season as long as they keep their manager. Though it wouldn't surprise me if he got poached mid season.
More likely to get playoffs under Mourinho than relegation battle. However, I am not convinced Portsmouth will manage to keep hold of him.
Just seen on Saints web that there's no trains on the weekend of the skate game either. Suggest that reduces the chance of no bubble from 5% to 0%