Peter Turnbull departs from the Central Coast Mariners Peter Turnbull has left the Central Coast Mariners. Central Coast Mariners general manager and former majority owner Peter Turnbull has departed from his post, the club announced on Thursday. Rumours of Turnbull's departure had been swirling around Central Coast for some time as a result of the takeover by new owner, Mike Charlesworth. Turnbull is one of the A-League's most senior statesmen, having been involved with Sydney FC in their start-up year before switching his attention to the Mariners in 2007. However, it wasn't always smooth sailing during Turnbull's reign at Gosford, with the club occasionally having to catch up on staff payments during some of the darker days. Players and management often found themselves at loggerheads over financial issues, ranging from the payment of superannuation to match fees in Asian Champions League matches. However, Turnbull was a staunch supporter of coach Graham Arnold, who helped transform the Mariners into the A-League's most consistent club during the past three years. He was also a key figure in the development of the Mariners' Centre of Excellence at Tuggerah and kept the club afloat while they sought a new ownership structure. Turnbull insisted that he wanted to stay on in a management capacity at the club despite selling to Charlesworth earlier this year. A club spokesman confirmed a statement between Charlesworth and Turnbull would be released later this afternoon.