THE PREMIER LEAGUE IS ENTERING ONE OF ITS BIGGEST MANAGERIAL SHAKE-UPS EVER.PEP'S GONE. KLOPP'S GONE. THE TOUCHLINE HAS SUDDENLY GOT A LOT LESS FAMILIAR.HAS THE LEAGUE GOT WEAKER... OR JUST A LOT MORE UNPREDICTABLE?THIS SEASON, 11 MANAGERS HAVE TAKEN CHARGE OF THEIR CLUBS SINCE 2026, AND ONLY FIVE HAVE BEEN IN THE JOB FOR MORE THAN TWO YEARS. THE OLD GUARD HAS ALMOST COMPLETELY DISAPPEARED.PREVIOU… 