Spurs have been rumoured to be interested in signing the Inter Milan midfielder who worked under Redknapp during their time together at Pompey.
"I've never made an enquiry about Sulley," Redknapp has said.
"I like Sulley, he was a terrific player for me at Portsmouth. I remember that day when he scored two at Villa, when we went there and played fantastic.
"Sulley is a top player but I've not spoken to Jose Mourinho about him."