Pundit remains unclear whether Liverpool will keep or sell the Belgian.
The Belgian has struggled for form since signing from Villa, but has still chipped in, and netted the late penalty winner against Crystal Palace at the weekend after he was felled in the box.
Redknapp says he is unclear whether Jurgen Klopp will want to keep him, but argues without him then the club would be looking a lot worse off.
He said: "Jurgen Klopp clearly doesn’t fancy him but I’m sure he won’t complain if the Belgian keeps chipping in with valuable goals.
"Benteke’s goals have been worth nine points this season and without them Liverpool would be 14th.
"He’s a good player but maybe he doesn’t fit Klopp’s style. I’ve yet to see Klopp’s style — we’ll see that next season — but if he does sell Benteke in the summer, goals like these will keep his price up."
He has winners against Sunderland and Bournemouth to his name, although putting those wins entirely down to him can be misleading, as if he was not on the pitch, another player could have scored them in his place - but it does show he has directly contributed to their cause when called upon.
The striker has spent most of 2016 on the bench, and was an unused substitute at Wembley a week earlier in the Capital One Cup final.