 Following the end of the 2011 season, Sise announced he would not sign a new contract with Halmstads BK and follow the club in its relegation to Superettan.Following the end of Sise's contract he was made subject to speculation of where he would play next, in mid October a person named Can Arikboga, claimed to be Sise's agent and told German newspaper Bild that the player was soon signing for Hansa Rostock in 2.Bundesliga, however 2 days after the rumor arose Sise told the local newspaper Hallandsposten that Can Arikboga was not his agent and that he had no idea of who Arikboga was, stating that he been a victim of an agent fraud.