The NRL has said an independent report has cleared Canterbury of wrongdoing over the handling of Ben Barba's time out of the game early this year.
The Bulldogs stood down Barba early in 2013 - with the player missing the first three rounds of the season - amid suggestions he was dealing with gambling and alcohol problems.
However media reports earlier this month said the real reason for his standing down was an allegation he had assaulted his former partner, Ainslie Currie.
A report, by Tony Branson SC, was commissioned to look into the club's response, including the role of former Bulldogs chief executive - now NRL head of football - Todd Greenberg.
The NRL announced the results on Saturday.
"I have completed my report and on present information there is no basis for the NRL acting against the Club or against Ben Barba," Mr Bannon said in a statement.
He found that based on the available facts, the club was not in a position to establish an act of domestic violence.
The NRL said the report found that Canterbury had acted appropriately and sensitively in addressing issues surrounding Barba.
Barba played his final game for the Bulldogs in their finals loss to Newcastle and he will play for the Brisbane Broncos next season.
More to follow.