A number of clubs, including Portsmouth, are still tracking Middlesbrough striker Yakubu Aiyegbeni.
However, the player's agent Barry Silkman doubts that Portsmouth would be able to match Boro's valuation of the Nigerian.
"Yakubu will not come cheap," Silkman warned.
"I honestly believe Pompey don't have the money to pay for him.
"Maybe Portsmouth thought the price would go down the closer it got to the (start of the) season.
"But Middlesbrough will look at the money Portsmouth have spent for David Nugent, Sulley Muntari (£7.2million) and John Utaka and think Yakubu is worth more."
The likes of West Ham, Manchester City and Aston Villa have also been linked with the Nigerian who is believed to be unsettled on Teesside.