Sjaak Troost has immediately resigned from his position as commissioner at Feyenoord. The article does not provide specific reasons for his departure, but it is presented as an immediate cessation of his duties. This development occurs amidst other Feyenoord-related news, including the team solidifying its second-place standing in the league after a narrow victory over Telstar. Other football news includes Sterling obtaining his work permit and potentially playing for Feyenoord, as well as player injuries and tactical observations.