I think it's much better to say it's difficult to predict the team that will finish in 4th position, cause it's more or less pretty certain that 1st to 3rd is going to be occupied by City, Liverpool and Chelsea, in no particular order yet, cause the season is still quite long, but 4th position is yet to be decided as quite a lot of teams are going to battle themselves for it down to the end which will make things more interesting and intriguing.
The difference point between the four to eight ranks was so narrow. Predicting from now on is very difficult, but I think Man United will fight for this place. The reason is UCL, they would be embarrassed if they couldn't get to UCL next season. Although many other teams are struggling I think Man United are the favourites. Rangnick is starting to change the philosophy of Man United players it seems they are performing better. Although there will still be a lot of games I'm sure they'll be there.