Adebayor has scored 14 goals since arriving on loan from Manchester City at the start of the season and Redknapp credits the 28-year-old as a key figure in his side's impressive form this term.
It is believed Adebayor is keen to stay at Tottenham on a permanent basis, but Redknapp knows the former Arsenal star's reported weekly wage of £170,000 could prove a big stumbling block in negotiations.
"He scored two goals last week against Swansea and he has been excellent, but whether it's possible to do a deal, I wouldn't be sure," Redknapp said.
"Manu is on loan at the moment and that's where we're at.
"The chairman will deal with (any negotiations) at the end of this season. I wouldn't have a clue whether (a permanent transfer) is a possibility or not."
Some reports claim City's players want Adebayor back next season to add a different dimension to their forward line.
But Redknapp doubts that will happen as the player had a difficult relationship with boss Roberto Mancini, who has a wealth of other attacking options.
"His future doesn't seem to be there," Redknapp added. "He probably needs to move on.
"City have just gone through a dicky little spell recently but they have lots of good strikers there.
"If you look at the quality they have up front, they are full of top players."
Source: AFP
Source: AFP