The Blues have been busy in the transfer market already this summer, having landed David Stockdale, Marc Roberts and Cheikh N'Doye, but Redknapp unsurprisingly wants further additions.
Birmingham City manager Harry Redknapp
Redknapp has been known to explore various avenues of the transfer market over his managerial career, and he is now looking to complete the signing of an Aston Villa player – something rarely seen between the two local rivals.
The Daily Mail report that Birmingham are hoping to seal a deal for Villa defender Tommy Elphick in the next 24 hours, boosting Redknapp's defence even further after the capture of Roberts.
The experienced centre back is now behind James Chester, Nathan Baker and new signing John Terry in the Villa pecking order, and he looks set to make the short trip to St. Andrews this week.
Tommy Elphick of Aston Villa
The report adds that Redknapp also wants to take Everton winger Aaron Lennon on loan, having worked with the former England international at Tottenham Hotspur.
30-year-old Lennon is returning to football this summer having been detained under the Mental Health Act back in May for a stress-related illness, and Redknapp now hopes to reunite with him at St. Andrews.
Would you like to see Birmingham sign Elphick and Lennon?