The Spaniard was appointed as Chelsea’s interim boss in November after Roberto Di Matteo was sacked by the Champions League holders following a disappointing run of results.
After a slow start, Benítez’s men are now on a three-game winning streak in the Premier League, including an emphatic 8-0 victory in their last home game against Aston Villa.
“You’d have to be a real dope to mess it up with [the likes of] Eden Hazard, Juan Mata, Frank Lampard,” Redknapp told BBC Sport.
“He [Rafael Benítez] has walked into a squad of players there who are Champions League winners – you’ve got a chance, haven’t you?”
Redknapp, who replaced Mark Hughes as QPR manager in November, also backed the former Liverpool manager to be a success at Chelsea.
“He’s a clever guy,” said Redknapp of Benitez.
“Even in the West Ham game that they lost, they could have been out of sight at half-time.”
QPR were beaten 6-1 by Chelsea in the last meeting with their west London rivals at Stamford Bridge in the Premier League last May.
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