What new coach previously assisted a former player for the Go Ahead Eagles?
2009–10 Feyenoord season: The 2009–10 season was the first season under new coach Mario Been. 2009–10 Feyenoord season:  The former Feyenoord striker was manager of N.E.C., and has been assistant-coach of Bert van Marwijk at Feyenoord in the past. Bert van Marwijk:  As a footballer, he played for the Go Ahead Eagles, AZ, MVV and Fortuna Sittard amongst other clubs, and represented the Netherlands once.
Mario Been