Sunderland boss Advocaat is looking to sign the French forward before the window closes.
21-year-old French striker Sebastien Haller has been scouted by Advocaat, who went to watch the forward in action for FC Utrecht - as they drew 1-1 with Heerenveen.
Haller netted Utrecht’s goal from the penalty spot, taking his tally for the season up to three strikes in two games.
The French youth international, who has five goals in six caps at Under-21 level, only signed for the Eredivisie side this summer, agreeing a permanent switch from Auxerre in France. He spent the second half of last season on loan with Utrecht, and his 11 goals and five assists in 17 games saw them splash out to bring in him permanently.
However, they are not against selling him this summer, with the report stating that Utrecht will only talk to a buying club if the amount offered to sign him exceeds roughly £5.6 million.
It is also stated that Championship side Brentford bid for him earlier in the transfer window, but a move collapsed as the Bees were unwilling to match Utrecht’s required asking price. There is no indication as to whether Sunderland are willing to pay the asking price, but it is clear that Advocaat is still looking to sign another striker before the window closes at the end of this month.