Celtic midfielder Brown recently described Heart of Midlothian winger Jamie Walker as a cheat, as quoted by BBC Sport.
Walker earned a penalty in the 36th minute of the encounter at the Tynecastle Stadium after going down under a challenge from Kieran Tierney.
Former Rangers midfielder Ferguson has shared his thoughts on the comments made by Brown in The Daily Record.
Celtic's Scott Brown speaks to referee Bobby Madden
“Was he right to do so publicly?” Ferguson wrote in The Daily Record about Brown’s comments. “Probably not, but that doesn’t take into account the fact that Scott was interviewed right after the final whistle when emotions were still running high.
“He spoke from the heart and didn’t try to soft-soap the issue. We all want honesty, so there’s nothing wrong with that.”
Celtic's Scott Brown
Celtic will take on Italian giants Inter Milan in the International Champions Cup on Saturday evening.
Meanwhile, Old Firm rivals Rangers will return to action on Saturday afternoon when they take on Dundee away from home in the Scottish Premiership.
Mark Warburton’s side will head into the game at Dens Park on the back of a 5-0 victory over Peterhead at Ibrox in the second round of the Scottish League Cup.