Manly coach Geoff Toovey has maintained his stance that the NRL club have nothing to worry about over the ASADA investigation, saying he's glad Darren Hibbert has reportedly agreed to be interviewed by the anti-doping body.

Speculation is mounting that the NRL could announce sanctions on Wednesday, with Cronulla's 2011 supplement program the issue most under the microscope.

Manly coach Geoff Toovey. Credit:Getty Images

NRL chief executive David Smith has been consulting with ASADA officials in Canberra ahead of Wednesday's ARL Commission meeting, after which it's speculated an announcement could be made.

The common link between Cronulla and Manly throughout the investigation, has been their past connection with sports scientist Stephen Dank and Hibbert, a supplement sales representative who had links with Dank.