Weir said the 2014 Melbourne Cup fourth place-getter would be entered for a race at Moonee Valley next Friday night, but isn’t yet sure he will take his place in the field.

His comments follow news that there will be no exemptions for the horses returning ibuprofen positives in recent months with Racing Victoria saying the rules must apply.

Signoff returned a positive test to the anti-inflammatory after winning the Lord Stakes at Caulfield last December.

In the lead-up to the race, Weir had taken elective tests which were negative.

Signoff and a number of other horses have been treated with ibuprofen on a property in Victoria as part of their rehabilitation from tendon injuries.

The RV Integrity Council said there was no legitimate case to allow any exemptions.

"We sympathise with the owners of the small group of affected horses from the one rehabilitation regime, however Racing Victoria is committed to enforcing the Rules of Racing by governing a sport which sees all horses race free of the effects of drugs," RV chairman of stewards Terry Bailey said in a statement.

"We understand that the use of this substance for the treatment of tendon injuries in racehorses is a complex issue because of prolonged and unpredictable clearance of the drug so we have explored all available options for the affected connections.

"However, the parent drug Ibuprofen is being detected in samples obtained from these horses at levels that make it impossible to differentiate between a recent treatment and a level caused by the leaching of the substance from a tissue storage site."

Weir said another test had been done on Signoff on Friday.

“We took another one (Friday) and if it comes back clear, it’s five tests in a row that are clear,” Weir said.

“We’ll just keep testing him and hopefully he keeps testing negative and one day we’ll just have to roll the dice and run him, I guess.”

Weir has Lucky Hussler, Trust In A Gust and Straum Star in Saturday’s group 1 Orr Stakes, 1400m, at Caulfield.