Pochettino will definitely need to develop a better match strategy, as well as strengthen the bond between the players. Then maybe Chelsea's performance will be somewhat stable. But I don't think Chelsea will fight for the title next season. A longer period of time is needed to build a squad capable of fighting for the title.
If Pochettino succeeds in making every Chelsea bond well with one another in the field of play and giving them the mentality that they can beat any club(big or small), the Chelsea team will be fighting for the premier league title next season. because by right, they have the caliber of players that suppose to take them to the top of the PL table every season, lifting about one or two trophies at the end of each season.