Celtic and Bolton have both been linked with moves for Spanish winger Valdo, currently of Espanyol.
The 29-year-old former Real Madrid winger spent last season on loan at Malaga in La Liga and could reportedly leave Espanyol this summer.
Manager Mauricio Pocchetino does not hold Valdo in his future plans, and Scottish runners up Celtic and Premier League outfit Bolton are rumoured to be interested in his signature.
If he were to leave Espanyol, the Catalan club are likely to demand a fee of €300,000 for his services.
As well as an early spell for Real Madrid, Valdo, a former Spain Under-21 international, had a stint at Osasuna before moving to Catalonia.