According to the Daily Mail, Sunderland are considering a move for Watford manager Slavisa Jokanovic at the end of the season.
The Dutchman is only on a contract until the end of the season, when Sunderland are expected to name a long-term manager - and whilst Advocaat oversaw a 1-0 win over North East rivals Newcastle earlier this month, the 4-1 home loss to Crystal Palace last week has done him little favours in his bid to land the job beyond the end of this campaign.
Instead, Sunderland are now being linked with a move for Watford boss Jokanovic - who was a team mate of Poyet during their time together at Chelsea in the early 2000's.
The Serbian, 46, has led Watford to the brink of promotion this season, with the Hornets currently sitting top of the table on 85 points.
However, the Daily Mail report that Jokanovic is yet to find out whether he will earn a long-term contract at Vicarage Road, and whilst that decision may hinge on promotion, it's believed that Sunderland are monitoring his situation with intent.
With a 59% win percentage during his time as Hornets boss, Jokanovic has certainly impressed in the Championship - though the same could be said of Poyet, who excelled at Brighton.