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The massive overhaul at Chelsea is risky, but it was inevitable; there were so many players that were underperforming and not doing well at all. While earning big wages; the likes of Ziyech, Koulibaly, Loftus Cheek, Harverts has been on the clubside with subpar performance and high wages. It is only right to move them on.
Similarly, Pochettino is doing well with purging the squad; the right time to rebuild chelsea is now
It does make sense to do so, so I wouldn't find it too bad. It's just that I think Pochettino is too hasty in making decisions in his plans for next season, for me Kai Havertz is still good and has enough potential, but maybe not so with Pochettino. He probably knew what the consequences would be, obviously it would be his responsibility.