Biochemist Shane Charter is adamant he will not appear at a hearing to testify in the Australian Sports Anti-Doping Authority's (ASADA) case against 34 past and present Essendon players.
ASADA was in court this morning trying to subpoena Charter and pharmacist Nima Alavi to give evidence in the case.
The Supreme Court application for the subpoenas has been adjourned until next week.
ASADA alleges that Alavi compounded the banned peptide given to 34 players on Essendon's 2012 list, and that biochemist Charter imported the substance.
But although both men have given lengthy interviews to the authority they are refusing to testify in the case, which is due to start on December 15.
Speculation is rife that without their testimonies ASADA lacks a compelling case against the players.
Charter doubts ASADA will be successful seeking the subpoenas and claims ASADA's pursuit of the Essendon players has been a flawed process.
"I'm not even sure whether they'll get it over the line," Charter told the ABC's AM program.
"I guess that's part of ASADA's strategy. And yeah, I'm not for it, put it that way.
"My view is that the whole process hasn't been optimal really from day one, and I think ASADA would concede that.