Pochettino didn't impress Chelsea's management earlier in the Premier League with a good performance, and at that time, his job was at risk because he wasn't getting positive results. But since Chelsea's performance took a new shape at the end of the Premier League season, making them overtake Manchester United in the Premier League table, Chelsea management should have allowed Pochettino to remain as Chelsea head coach because he has gotten the tactics that will help Chelsea perform better next season. I was surprised when I heard that Pochettino left Chelsea by mutual agreement. It will be hard for a new coach to adapt to this young Chelsea squad.
Pochettino was even lucky to stay till the end of the season, if it had been Abramovich before the end of last year and let's say 2 week of January this year the man Pochettino would have been kicked out of the managerial role. The way Chelsea played wasn't something such a man (Abramovich) would take likely but Todd Boehly wasn't the man who knows when to act and if they bring in a new coach, I feel it will be the players who would find it difficult to adapt by the new Manager's pattern.
Yes, he was very lucky to stay at Chelsea for that long, but since he started getting good results with the young Chelsea squad, Chelsea management should have given him a second chance. The best managers in the world right now are on contract with other clubs. Chelsea will even find it difficult to get a manager who will perform like Pochettino. It was not Pochettino's total fault that Chelsea were not winning their matches at the start of the Premier League season; Chelsea players were finding it hard to score goals that could help the club win matches in the Premier League.