Following Zola's resignation on Monday (17 April), Birmingham City have announced changes to backroom staff.
In a statement the club said:
It is understood that Hitchcock's role will not be changed.
Redknapp will meet and train the Blues players for the first time today. The club are placed 20th in the Championship table, three points above the relegation zone.
Birmingham City have three final fixtures against Aston Villa, Bristol City and Huddersfield Town.