The defender has played for the Argentina national team, but struggled for consistent form while at the Black Cats.
Sunderland's Santiago Vergini
It's fair to say that the Black Cats didn't get the best out of the defender, even if he did play his part in Sunderland's amazing escape at the end of the 2013-14 campaign, under Gus Poyet.
Vergini was brought to the Stadium of Light in the winter transfer window of that season, initially on loan, with the move being made permanent in a complicated agreement based on the club's survival from relegation after 18 months in the North East.
Santiago Vergini - Sunderland
Poyet's second campaign in charge was a difficult affair even though Vergini featured regularly at both central defence and at right back. The Uruguayan left with the Black Cats in 17th position in March, just out of the relegation zone, but when Dick Advocaat took over the 27-year-old Vergini found himself relegated to the bench soon after and he made just a handful of appearances in the remaining fixtures.
Last summer it was made clear that Vergini was unwanted in the North East, despite the club being obligated to sign him, and he spent a campaign on loan at Getafe with a view to a permanent transfer. Unfortunately for player and both clubs, that was voided as Getafe were relegated following a disastrous second half of the season.
Boca have signed Vergini despite concerns over his fitness, offering him a one-year deal rather than a three-year contract according to the Chronicle.
Below are a selection of comments from supporters on his departure from Sunderland:
Vergini leaving yessssssssss.— James // 7 days (@jamesssxo) July 4, 2016
So we finally got rid for Vergini?— Stephanie Wooton (@StephanieWooton) July 4, 2016
About time, thought he'd never leave..
Vergini now gone to Boca Juniors so at least some movement will free up wages— Stuart Shaw (@Stuartftm1983) July 4, 2016
Vergini gone. more of the deadwood shifted out— Ian (@safcianpeterlee) July 4, 2016
Now can we have some new signings please Sunderland
Vergini leaves for Boca. Adios— James // 7 days (@jamesssxo) July 4, 2016
Summer sales begin with Vergini sale. #SAFC not lost too much on that one— Chris Young (@YoungSunEcho) July 4, 2016
Always liked Vergini the mad bastard. Can remember him trying to skin 2players in his own box in the 90th minute when we were winning #SAFC— Jordan maloy (@MaloyJordan) July 4, 2016
Are people genuinely arsed about vergini leaving? like watching Bambi on ice— Eve (@sayerseve) July 4, 2016