 Seip scored his first goal for the Mariners in the 2014 AFC Champions League against Beijing Guoan.His volley in the 73rd minute was the only goal of the game.Seip left Central Coast Mariners after the end of the 2013/14 A-League season, well short of his initial 3-year deal due to a change of ownership at the club nullifying all player contracts, and not being offered a continuation of the original term.