Uruguay international Gaston Ramirez is expected to seal a move to Sampdoria, after the midfielder flew out to Italy for talks.
Ramirez was pictured exiting the UK this morning, bound for Italy, and images have since emerged of his arrival on the continent.
Boro boss Garry Monk confirmed at his pre-match press conference this morning that the club had given another club permission to speak to the 26-year-old.
On transfers, he said: "There’s still ongoing with recruitment in terms of incomings and outgoings.
"We’ve given Gaston permission to speak to another club and that’s really all we want to say at this time.
"I think the club deserves a lot of credit.
"Yes, we’ve spent money but we’ve bought quality and value, and players with a long future at this club who add to the strong core we have.
"From day one it's been clear we don't have to sell any player and it would have to be an extraordinary offer if it's a player we don't want to leave.
"But we’ve got a good balance in terms of moving players out as well and we’ve done the bulk of the work, although there is some work to be done."