I dare not give more guarantees to Pochettino even though he had experience in the EPL with Tottenham. I see competition in the EPL getting tougher even for the top ten teams are very competitive. Pochettino certainly won't be easy to bring Chelsea back to the top flight. Currently, the Chelsea squad has also changed a lot, a number of young players who lack experience are more dominant. Even though I don't deny that Pochettino is better than Potter and Lampard, he really has to be able to prove all of that.
And actually we also don't have to hope too much for Chelsea in the coming season. Even if Mauricio Pochettino can make Chelsea compete in the top 10 for me that would be a pretty good improvement. But surely Mauricio Pochettino must have much higher ambitions. But for the competition in the top 5 or 6 I think it will be quite difficult next season. Because we know that Newcastle, Man City, Liverpool, Arsenal, Man Utd and Brighton or Aston Villa seem to have better readiness than Chelsea, who are currently even focused on releasing many players.