The 67-year-old called chairman Tony Fernandes at 05:30 GMT to say he would be leaving the club, who are second bottom of the Premier League.
"I need immediate surgery," Redknapp said later. "If I can't give 100%, it's better for someone else to take over."
Did he find out at 5:30 in the morning that he needed knee surgery?
"I need immediate surgery," Redknapp said later. "If I can't give 100%, it's better for someone else to take over."
Did he find out at 5:30 in the morning that he needed knee surgery?


