Don't be daft. The rags are not winning every one of their the remaining 21 games are they.
49 points would put us on 95 and mean this very average scum team would need to better the league's highest ever points tally in order to take the title. And do it in a season where another team, i.e. us, had also matched the highest ever tally. That is pretty much impossible.
So we need at most 49 points from 66. Probably 44 would do imo. We can afford to drop points in 6 or 7 games and still be champions.