Former Sunderland manager Dick Advocaat has joined Feyenoord in an advisory role as the club look to reverse their slide down the Eredivisie table.
The vastly-experienced 68-year-old has agreed to assist head coach Giovanni van Bronckhorst until the end of the season, the Rotterdam-based team have announced.
Feyenoord have slipped to sixth in the Eredivisie after suffering seven successive defeats, with their last victory coming back at the start of December against Heracles.
Advocaat will not sit on the bench for matches and has told the club he does not want to be paid.
"When [technical director] Martin van Geel approached me on Monday morning asking if I wanted to take on this role I immediately had a positive feeling about it," he told Feyenoord's official website.
Dick Advocaat gaat technische staf Feyenoord ondersteunen: https://t.co/xkYNNhh8KJ pic.twitter.com/FS3JojBah8
- Feyenoord Rotterdam (@Feyenoord) February 16, 2016
"That feeling has only grown after a number of meetings. I'm doing this first and foremost because I have a bond with Giovanni.''
Van Bronckhorst played under Advocaat at Rangers as well as for Netherlands.
Advocaat's last post was in charge of Sunderland, where he left in October after seven months in charge.
He quit after a poor start to the current season, which saw Sunderland fail to win any of their first eight Premier League fixtures.
Advocaat, who guided Sunderland to safety last term, brings to Feyenoord a host of experience at both international and club level, having also been in charge of the likes of Russia, Serbia, PSV Eindhoven, Borussia Monchengladbach and Zenit St Petersburg.