It's just that Arsenal have one game to spare, so they seem to be favourites with Spurs and Man U... But Arsenal have only recently started playing well, before that they were losing to the underdogs, which shows their unstable play... There are still games ahead that could change everything... I wouldn't be confident that Man U and Arsenal won't switch places, or that Spurs won't take the lead...
Not only that they have an extra game, they also managed to actually be ahead with that missing game as well. So if they win that game, not only they would be ahead, but ahead a lot more. I believe that they will certainly be the fourth team this year, and they already solidified their place there.
This is seriously incredible, after first 2-3 weeks they were at the bottom of the league, so its really cool to see how a team could make a comeback. Also the winners of the league is still unknown, City lost enough points that made LFC be literally just 1 point behind and LFC will face them soon as well which would make that game potentially title decider.
At the start of this season few teams were struggling very badly and most chances were they will have no good result until end of this season Arsenal were also one of them but no doubt under Arteta's managerial experience they fight back and now have one off strongest case for staying at number four spot with Manchester United and Tottenham are in hunt for having this same spot but Arsenal with their performance and fighting spirit are hot favourite for spot.
Sadly Manchester United is badly going down under wired circumstances because they have the best quality players, but things are also most valued for them, but they still not able to have their required results which is matter of shame for them now most chances in next season they are not going to have any European connection, so we can expect some better from them and good fight between 7 or 8 teams for title race.