Mourinho has to compete seriously for the PL or CL this season or else he’ll get sacked ino.
But Mourinho isn't a magician. He can only work with the squad he's got and when City, Liverpool, and Spurs all have much stronger squads imo there's not much he can do about it, hence why fourth and a Champions league play off spot is probably the best they can hope for. I think that would be a successful season for them. Maybe they can shine in other tournaments/cups but I don't think they've got a chance with the Premier League and this isn't Jose's fault (imo). If they can't win it with Mourinho then I doubt they'll be able to win it with anyone else either. Teams blame managers for too much these days and I don't think they should be sacked the moment they don't win the league. If United finish 7/8/9th then maybe, but not top 3/4/5th especially considering the strength of their opponents.
Sorry but I disagree, see the image below. Since Mourinho was employed he’s spent the 2nd highest amount (net spend) on transfer fees. He’s got nobody to blame but himself, this is his squad.