DUTCH side AZ Alkmaar have told Sunderland to up their bid if they want to land American striker Jozy Altidore.
According to RTV Noord Holland, AZ Alkmaar bosses have confirmed contact from Sunderland over the American international.
The players agent Lyle Yorks had earlier claimed they were in advanced discussions with an English Premier League side.
Yorks would not name the club, but it was thought that Sunderland were in the driving seat in the race for the frontman.
However, AZ officials revealed: “The first offer was not sufficient. We have let them know. Now it’s wait and see.”
A number of clubs are said to be interested in Altidore, with Fulham, along with clubs from Germany, and Italy ready to challenge Sunderland.
Last week, Altidore himself spoke of his desire to return to the Premier League, after an unsuccessful loan spell with Hull City back in 2010. Stating he was much better now, than the player that fans saw the last time he played in England.
Last season was the most prolific yet for the American international, as he netted 31 goals, in 41 appearances, including one in the final of the KNVB Cup, which AZ won 2-1 against PSV Eindhoven.
His goal-scoring feat last year saw him break Clint Dempsey’s record as the top scoring American abroad in one season.