Sacked Cronulla doctor Dave Givney says he'll take legal action over his axing from the National Rugby League club.
After 28 years of service, Givney was dismissed last Friday along with the football manager, head trainer and physiotherapist while coach Shane Flanagan was stood down.
The Sharks are under investigation by the Australian Sports Anti-Doping Authority over suspected doping practices at the club in 2011.
The Sharks board claimed their staff shake-up was not related to any use of banned substances, but rather "serious management failures" during a three-month period in 2011 when sports scientist Stephen Dank worked at the club.
The veteran doctor, who was also the Australian and NSW team medico during his career, says he's spoken to lawyers over his sacking and decided to take legal action.
Givney says he has no desire to do anything to harm the club but he's been forced to leave matters in the hands of his lawyers.