Fulham head coach Rene Meulensteen has confirmed forward Bryan Ruiz is free to leave the club during the January transfer window.
The Costa Rica international has endured an indifferent spell at Craven Cottage since signing in August 2011, and has only started eight games this season for the Premier League strugglers.
A statement on Fulham's official Twitter account read: "Rene confirms Bryan Ruiz has been given permission to talk to a number of clubs."
La Liga outfit Real Betis have emerged as favourites for the 28-year-old's signature, with a loan deal touted as a possibility.
Betis assistant coach Sergio Fernandez hinted a deal was imminent, and believes Ruiz will be "perfect" for the team.
Speaking to Diario de Sevilla, he said: "Bryan Ruiz is a fantastic player, links up well with team-mates, has a good shot and brings lots of creativity.
"We are confident that his game and his qualities are perfect for our team and that he can put Betis on the right place in the ranking. I think he can settle in quickly."