The Republic of Ireland international missed Tuesday's 1-1 draw with Sunderland at White Hart Lane with an ankle problem.
Redknapp could be down to one fit striker this weekend as Roman Pavlyuchenko departed their Black Cats clash at half-time with a back injury.
"I could do with Robbie if Pavlyuchenko's got a bad back," said Redknapp. "It leaves me with only Crouchy.
"I've got no-one else I can push up front, really, even (Aaron) Lennon, who could play through the middle at a pinch."