Portsmouth boss Redknapp admits battle to land defensive transfer targets
Redknapp had been in talks with Dunne over a possible move South but it appears the appointment of Mark Hughes as the new boss at the City of Manchester Stadium may lead Dunne to remain at the club.
"I think we might be struggling on that one" Redknapp told The News.
Redknapp has also reported that the fee Tottenham are asking for Kaboul is excessive.
"I was interested in him but what they want is more than we are willing to pay, so there is nothing happening," Redknapp explained.