Steven Defour's agent has told Sky Sports that Porto are yet to decide whether to loan him or sell him permanently.
The Belgian international is anxious to secure first-team football ahead of this summer's World Cup finals.
Aston Villa had been linked, but Fulham are now understood to be showing a strong interest.
Paul Stefani told Sky Sports that Fulham 'had shown an interest' - but there were no talks.
Porto are set to approve a move for Defour this month, but the only issue is whether it is permanent or not.