Here, Press Association Sport takes a look at some of the numbers behind his managerial career to date.
7 - English clubs Redknapp has managed
After starting at Bournemouth in 1983, he took charge of West Ham, Portsmouth (twice), Southampton, Tottenham, QPR and then Birmingham after a short spell as boss of Jordan's national team
He also worked for Derby as a football advisor in 2016.
2 - promotions to the Premier League
He claimed the Division One title in his first spell at Portsmouth in the 2002-03 campaign
Redknapp then won the Sky Bet Championship play-off final with QPR in 2014.
9 - the losing margin on his managerial debut
Bournemouth suffered a 9-0 defeat to Lincoln in Redknapp's first game as caretaker boss
However, he secured a 2-1 win in his first game as the club's permanent manager a year later.
1984 - the year Redknapp won his first piece of silverware with Bournemouth
They beat Hull in the Football League Trophy final
He later went on to win the Third Division title with the Cherries in the 1986-87 season.
1380 - English league games Redknapp has managed.
1 - FA Cup win
Redknapp steered Portsmouth to victory over Cardiff in the final at Wembley in May 2008
2010 - the year he was named Premier League Manager of the Season after guiding Tottenham to fourth place.
18 - the number of goals Tottenham scored in their six Champions League group games in the 2010-11 campaign
Spurs topped their group before beating AC Milan in the last 16 but they eventually lost to Real Madrid in the quarter-finals
Source : PA