The agent of Porto striker Jackson Martinez has confirmed that his client has agreed personal terms with Italian outfit Napoli.

However, Manuel Manzo has admitted that a transfer figure is yet to be agreed between the two clubs, with Porto demanding that Martinez's release clause is met.

Manzo told Sky Sport Italia: "There's an agreement with the player, but we're missing one with Porto and the club don't want to sell him.

"The only way it could happen in my opinion is that they pay the £35m release clause, otherwise he won't leave."

Martinez scored 26 league goals for Porto last season.