The 54-year-old was a key part of Ten Hag’s coaching set-up during their two-and-a-half-year spell in the Man United dugout.
Advertisement
Advertisement
He followed Ten Hag from Ajax to Old Trafford but has been out of work since leaving Swiss side FC Zurich last October.
According to reports from Portugal, Van der Gaag is in advanced talks over becoming the new Maritimo boss.
Van der Gaag is no stranger to Maritimo, having spent five years there as a player between 2001 and 2006.