The predictions game is littered with embarrassing own goals but how about Manchester United to win the Premier League and Watford to go down Niall MacSweeney, a Dublin-based Sunderland supporter and long-standing Observer reader, has been in touch with a suggestion. “It would be great if you could predict from one to 20 the finishing places in the new season’s Premier League,” he writes. “Always good fun to compare with my own …