Everyone applauded Pochettino towards the end of the season, so everyone expected Chelsea to keep him. It was a shock to everyone to see them sack Pochettino. Let’s just hope the new coach performs better.
They couldn’t keep him because he couldn’t meet the demands of the management but he still tried his best though.
And even I can't say that Pochettino left Chelsea because he was fired. But it seems that Pochettino and Chelsea have agreed not to continue working together based on differences in understanding or something similar in building the Chelsea squad. And yes, Pochettino already feels there is nothing he can continue if he can't use his methods. So he chose to end his coaching career at Chelsea. because I'm pretty sure the club is quite reluctant to let go of Pochettino. it's just that they may fail to make an agreement due to a difference in thought or method. Because in the news it was stated that Pochettino left Chelsea based on mutual agreement and not because of a unilateral decision.