So far I didn't see any special news about Chelsea after Pochettino joined the team and it seems like Pochettino didn't show interest in hiring players yet, not at least they tried to keep the list private but the Chelsea I can see need a revolution and Pochettino should release many players they don't need to have the empty spot and hire the players he needs to have for the next season.
I expect to see Pochettino help Chelsea to be at the top of the premier league again in the next season 9f everything goes well.
Before the transfer window closes, Pochettino is actively seeking to add fresh players to the Chelsea roster. Inter and Chelsea are in negotiations for the transfer of goalkeeper Onana, as well as Nicolas Jackson of Villarreal and Moises Caicedo of Brighton. Before the start of the upcoming season, I believe Pochetino would like to add a few more players to the Chelsea squad.
At the moment, Kante, Mendy, Kalidou Koulibaly to Inter, and Mateo Kovacic to Manchester City are the players who have been released by Chelsea and transferred to other teams. Some other players will also still move aside before the transfer window closes.
Let's watch how Pochettino develops the Chelsea team he hopes to lead by the start of the next season.