The 28-year-old was set to head into the summer transfer window as a free agent, with his existing deal at Kassam Stadium set to expire.
A U player since 2019, when he arrived from Scottish Premiership side Motherwell, Gorrin played 66 league games in his first two seasons at Oxford, but his last campaign was cut short in November with just 13 league matches due to a serious knee injury.
Despite the setback, Oxford recently offered the Spaniard a new deal to fend off interest from other EFL clubs, with Charlton Athletic and Burton Albion said to be lively.
They were joined by Sunderlandthe club Gorrin spent time with early in his career in their development squad, with the Black Cats said to have made contact regarding his potential return earlier in May.
However, Gorrin is expected to stick with Karl Robinson and Oxford as they look to crack the top six in Ligue 1 again next season.
This is good news for Oxford, who would not have wanted to lose the experience of Gorrin despite his serious knee injury last year.
The Spaniard is the man who gets things done in midfield, interrupting play and distributing the ball and his defensive attributes allow Cameron Brannagan to go forward in search of goals.
He could have easily been tempted by a return to Sunderland, especially as they have now gone up a league in the Championship.
Gorrin will, however, spend at least one more season at Kassam Stadium, where he will no doubt be looking to make up for the lost time he spent on the sidelines.