The Sydney Swans have been cleared of any wrongdoing after an investigation into their concussion management of midfielder Josh Kennedy in last week's qualifying final against Greater Western Sydney.

Kennedy suffered a knock to the head in the clash and was removed from the ground for testing before returning in the second quarter and playing out the match.

The midfielder was wobbly on his feet after being collected high in a Steve Johnson bump, prompting concerns that he may not be able to play out the match.

The AFL investigated the circumstances around his testing and eventual return to the field and found the Swans had followed the League's concussion protocols.

The AFL said he had since shown no effects from the knock since match-day.