It is not certain that they are safe to be in the Champions League next season, bro. Chelsea, whose position is now in sixth, still has the opportunity to take a place there next season.
Try to calculate the number of Manchester City points with Chelsea. They are only 1 point difference if Chelsea wins the next match against Everton.
Indeed they were able to win against Aston Villa and were seen away from the sixth position of the standings, it was because Chelsea still kept one game that had not been played.
If Manchester City in the next match fails to win, while Chelsea are able to win, there will be more gaps.
Manchester City are more experienced than other competitors for top five but in a season with terrible crisis, everything can happen with Manchester City in a single match and in a battle for top five. With many clubs are competing for top five, Nottingham Forest, Newcastle United, Chelsea, Aston Villa, the competitiveness is very high and Manchester City must play and get so good results in last four matches to be in top five.
With very small point differences among those competitors, one defeat or one draw in 4 remaining matches can change a club position a lot.
Manchester City have reason to enjoy their temporary third position in the league but they still have four big matches to play.