Adebayor has made a scintillating start to his career at White Hart Lane since arriving on a season-long loan from Manchester City at the end of August.
Redknapp has made no secret of his desire to sign the Togo international on a permanent basis but the Spurs boss has warned that he must revise his pay demands in order for such a move to take place.
Manchester City are currently subsiding Adebayor's wages, reputed to be in the region of £170,000 a week, and the former Arsenal striker has already been told that he has no future at the Etihad Stadium.
Redknapp told the Sunday Mirror: "If Emmanuel maintains his current form I would love to keep him. But his wages are going to be a major stumbling block, that's for sure.
"I have no idea how much we're paying towards his wages at the moment as the chairman deals with those issues but I suspect they are massively subsidised by City.
"The only way we can realistically get a deal done is if Emmanuel is prepared to take a substantial pay cut and put his football before money."