I doubt if Manchester City can successfully snatch the 4th position with the teams that are in the same race for the 4th spot.
I know that you will agree to the 4th spot of the Premier League table is not only between Chelsea and Manchester City. The teams below Manchester City(Newcastle, Brighton, Fulham and Aston Villa) are in the same race for 4th position. Any loss match from Chelsea or Manchester City, it can happen that Newcastle or Brighton wins their own match, they will come above Manchester City or Chelsea in the 4th place. However, the 4th position is not guaranteed or certain for any club to step on, at the end of season
the 4th position is not fixed yet which club is worth it to fill that zone, but I am sure The City will lock it to guarantee that they are defending champions from the last session. we certainly have doubts because they are not in the best performance, but based on what they did in the last match, The City won't let another club like Chelsea, or Newcastle occupy the position. Arsenal and Nottingham have not yet fixed if they will remain in that position because there are still many matches left which will probably will be replaced by other clubs if their performance decreases based on how much player injured they got.