Three former Gold Coast Titans, including France-bound Dave Taylor, will stand trial over cocaine charges but Greg Bird is among four team-mates to have charges thrown out of court.

Former Queensland second-rower Taylor, Joe Vickery and Jamie Dowling were committed to trial at the Southport Magistrates Court on Thursday after their lawyer conceded there was a prima facie case against the trio.

They were among seven Titans last year implicated in the alleged drug ring of accused kingpin and 1980s Eastern Suburbs Roosters player John Touma, uncovered by Queensland's Crime and Corruption Commission (CCC) and also netting code-hopper Karmichael Hunt.

Four Titans have been let off with the prosecution cases against Bird, fellow State of Origin representative Ashley Harrison, Kalifa Faifai Loa and Beau Falloon unravelling.

Magistrate Chris Callaghan dismissed their possession and supply charges because of insufficient evidence to go to trial.

Magistrate Callaghan initially ruled on Wednesday that key phone conversations with Touma and third parties would not be admissible in the case against Falloon, and without them there was insufficient evidence to proceed.

He ruled similarly in the cases against Bird, Harrison and Faifai Loa on Thursday morning.

Former Gold Coast Titans player Ashley Harrison arrives at court before having two drugs charges dismissed. ( ABC News: Tom Forbes )

Bird was accused of organising a supply of cocaine for his October 2014 buck's party in Byron Bay from Touma - a wine merchant - using coded conversations about "Grange" and "champagne".

Prosecutors submitted several intercepted conversations between the pair, including one in which Touma bragged: "I swear to God, it's the best champagne in town."

But Magistrate Callaghan said if the matter proceeded to trial, the Crown would need to eliminate all reasonable hypotheses consistent with Bird's innocence.

"It appears to me that the Crown would not be able to do that, in any way shape or form, on the state of the evidence as it currently is," he said.

"At the end of the day, there is a lot of speculation, there is suspicion, but there is lacking proof of Bird being involved in a conspiracy."

The case against Harrison was even weaker, Mr Callaghan said, before also dismissing his charges.

Outside court, former Titans captain Bird, who is recovering from injury, thanked his legal team.

"I'm very happy that finally we can put this behind us," he said.

"Now I can focus on my recovery and my family and hopefully next year's season at the Titans."

AAP