The news was good at the tribunal for Carlton's Steven Browne, who was found not guilty of rough conduct against Adelaide's Jason Porplyzia.

The charge, which saw the match review panel offer Browne a four-match penalty or three with an early plea, was thrown out by the jury in a couple of minutes.

Browne gave evidence that he had no idea that a collision was about to occur, until he was hit by Porplyzia, as he was tracking his Crows opponent David Mackay in an attempt to stay goal side of him.

The 19-year-old said after the hearing that he was satisfied with the verdict.

"There was no intent of hitting him or anything. I feel sorry for the bloke but I can't do anything about it," he said.

Porplyzia was left concussed and scans on Monday revealed that he has bruising to the brain.