The 27-year-old has stepped up when Robbie Keane has not been on the pitch - but a different player is likely to be asked if Spurs get awarded a penalty on Wednesday evening in their Barclays Premier League clash against Fulham.
"He's a great goal-scorer but his penalties haven't been so great," Redknapp said. "When you place them, unless you can be accurate and stick them up there in the top corner like the boy Jermaine Beckford did for Leeds.
"Julian Dicks was a great penalty taker and Ray Stewart at West Ham used to smash them. The one Beckford took was world-class, right up in the top corner.
"There are plenty of people here. Tom Huddlestone can take them, Niko Kranjcar can take penalties very well. It wouldn't be a problem for them two. We will have to look at it.
"I haven't told Jermain yet but I will have a word with him. He would want to carry on because he loves scoring goals. You know what he's like."