Graham Potter was called "Harry" and "Hogwarts" by Chelsea players behind his back prior to his Stamford Bridge sacking after failing to command the same respect as his predecessor Thomas Tuchel, according to reports.
Potter was relieved of his duties on Sunday with the Blues in the bottom half of the table after a dismal 2-0 defeat at home to Aston Villa the previous evening.
The 47-year-old won just 12 and lost 11 of his 31 matches in charge after leaving Brighton to replace Tuchel in September.
Despite leading Chelsea to the Champions League quarter-finals, he struggled to win the players over and they believed he lacked authority, as reported by The Athletic.