The Parramatta Eels have brought an end to Michael Jennings's playing contract by mutual agreement, the club announced on Tuesday.
Jennings, who was provisionally suspended after testing positive to banned substances last year, had been contracted to the Eels for the remainder of this season with an option in his favour for 2022.
He had allegedly tested positive to Ligandrol and Ibutamoren.
"The Parramatta Eels and Michael Jennings have today agreed to bring to an end the terms of Mr Jennings's playing contract," the Eels said in a statement.
"Mr Jennings is the subject of an ongoing process with Sports Integrity Australia (SIA). Mr Jennings has been with the Eels since 2016 and based on its experience with Mr Jennings over the last 5 years, Parramatta does not consider that Mr Jennings would intentionally take performance enhancing substances.
"However, in recognition that the SIA process will take some time to play out, Parramatta and Mr Jennings have agreed to part ways because Mr Jennings wishes to allow the team to fill his position and have the best 2021 and 2022 seasons possible."
The 33-year-old former NSW Origin centre and Tonga international played 298 NRL matches across stints at the Panthers, Roosters and Eels.