Flo had originally said that he would like to stay and help Sunderland try to regain their place in the top-flight but has become concerned at the clubs intentions to sell their top stars: "It can be just as fun to play at the top of the First Division as it is at the bottom of the Premier," said the Norwegian international.
"But, the thing I am worried about is will we remain strong? The club are selling players to avoid a bigger loss.
"I would gladly play in Spain or Italy but no clubs have shown an interest."