Atletico Madrid striker Diego Forlan has been granted the opportunity to discuss a transfer away from the club after being left out of the squad for the Europa League tie with Vitoria Guimaraes.
Forlan has two years remaining on his contract at Atletico and claimed over the weekend that he is happy at the Vicente Calderon.
However, he could now be on the move before the transfer window closes after being given permission to study an offer from an unnamed club.
A club statement from Atletico read: "Forlan asked (coach Gregorio) Manzano this morning not to travel to Guimaraes because he was studying the possibility of signing for another team.
"Manzano authorised him to stay in Madrid because Atletico have a lot at stake and need players who are 100 per cent."
French giants Paris St Germain have been linked with a swoop for the Uruguay international and could afford his reported €12million (£10.5m) asking price.
Inter Milan, though, are favourites to bring in the 32-year-old as a replacement for the Anzhi Makhachkala bound Samuel Eto'o.
Reports in France suggest PSG will continue to wait in the wings if Forlan is unable to agree a deal with Inter, but are also monitoring current Nerazzurri striker Diego Milito.
PSG had identified Milito as an option to improve their attack, but the Argentine wants to stay at the Giuseppe Meazza ahead of the imminent departure of Eto'o.