The chances of Paul Gallen finishing his NRL career as a one-club man increased after his management and Cronulla officials held "positive" negotiations on Thursday.

Rivals clubs have flagged interest in Gallen, who is off contract at the end of the season, after he expressed concerns about the time it was taking to determine his future. Gallen's agent David Riolo met with Sharks CEO Lyall Gorman to discuss the prospect of a one-year extension for the veteran forward.

Contract talks: Paul Gallen is hoping he can come to terms with the Sharks over a new deal. Credit:Getty Images

"It was a positive meeting. Gal wants to be there and the club wants him to stay," Riolo said. "That's what we're working to do."

Riolo also represents Jack Bird and the club has expressed interest in extending the young Shark's stay beyond 2016. But the priority is Gallen, who is preparing to play what could be his final Test match on May 1 against New Zealand. But before he is officially cleared for selection, Gallen still needs to meet with the NRL as part of his penance for a drunken tweet, which threatened his representative career. The NSW captain has completed a series of leadership courses in order to be eligible.