Chelsea played very well against Southampton and won game. They were very aggressive and showed Southampton weaknesses, which made their fans very happy. Win helped Chelsea move up to fourth place in standings and get important points. But Manchester City is also trying to finish in top four so competition will get even tougher. It is likely that Chelsea and Manchester City will fight very hard to get spot in the Champions League next season. So let's see who will win in this race.
The victory over southampton has now opened their chances of returning to the top 4 zone and will certainly make the competition in the UCL zone very tight, because there are several teams that will try to get UCL zone tickets besides Liverpool and Arsenal, the victory in the match has brought them currently coup position 4 from Manchester City and of course the position change will still occur if later Manchester City wins in another match, With the current point difference, of course we cannot say the competition will occur just between Chelsea and Manchester City, because so far even Aston Villa which in 10th position, is also still possible to end the season in the top 4 zone later especially with a long league journey.
While it is true that Chelsea is back at fourth place, City has one less game and could take the position back anyways. Obviously City has been terrible all season long, not what we are used to seeing from them, but they could still fix things. Remember, City had three wins in the last five games, and one of the losses came from the top team, so City could still get their revenge and take the fourth spot.
The fact that Nottingham Forrest isn't even the discussion of going down is a huge deal for them, they are only one point more than Chelsea, and only three points more than City as well, so anything could happen without a doubt, these type of things could mean a lot more on the long run and we could see this change eventually.