Middlesbrough defender Fabio is understood to be unhappy at the club and has asked if he can leave in the January transfer window.
Fabio is eyeing an exit from the Riverside Stadium after being left out of Tony Pulis' last two match-day squads.
The 27-year-old former Manchester United full-back posted a message on Instagram saying 'Thank you' to Boro fans after news broke that he had been left out of the team that beat Preston North End 3-2 on Monday.
The Brazilian only joined the North Yorkshire side at the start of last season when he moved from Cardiff.