BRISBANE will put Jonathan Brown through neurological tests before he is cleared to return to AFL action but the club insists the skipper has not suffered any brain damage from his three major head injuries.

Brown, 30, underwent surgery to repair a fractured cheekbone he sustained in a training collision with team mate Matt Maguire at Coorparoo.

He was dazed but not concussed in the accident and the Lions are confident the facial fractures are the extent of his injuries.

Brown is likely to resume light training at the end of next week and his injuries are expected to sideline him for six weeks.

If this proves correct, he would be a contender for Round 3 of the premiership, ruling him out of previous games against Melbourne and Carlton.

But three major head knocks in a year is cause for concern and Lions football manager Dean Warren said Brown would be tested thoroughly to ensure there had been no impact on his cognitive abilities.

An AFL spokesman said Brown would not require permission from the league's medical staff to return to the field.

Warren dismissed suggestions Brown had suffered some memory loss after being knocked out against Geelong last year, his second major injury for the year.

The Round 17 collision was the first time Brown had received concussion and the club insists he has suffered no lingering side effects.

"We've received no medical advice that he has a problem there, but we'll make sure the specialists and our docs give him a thorough examination in six weeks time to make sure everything has healed and there are no lingering effects from the injury," Warren said.

"We wouldn't put any players out there if they had any problems.

"He will need to get medical clearance to return."

The Lions say last night's procedure was straight forward and was not related to the original injury he suffered when he was collected by Docker Luke McPharlin in Round 1 last year.

He was limited to just 10 games last year after suffering two horror facial injuries, which required major surgery and left him with metal plates inside his face.

Warren also stressed Brown was not susceptible to facial injuries and the structure of his face had not been weakened in any way.

"Brownie has had some really bad luck that is all you can put it down to, he is not fragile in that area," he said.

Brown lay prone on the ground for 30 seconds and took another 30 to get to his feet after Maguire's knee collected his face in a marking contest.

Originally published as Brisbane's Brown-dog day