"In a funny sort of way, this could bring Australia together. I think it is a chance for them to gel together. They really have to take this opportunity to sit down and have a chat about what they want to achieve," Warne wrote in his column for 'Daily Telegraph'.
"After this incident, England could be thinking to themselves Australia are there for the taking. They easily beat them on Saturday in the Champions Trophy and Australia are in disarray both on and off the field. England can now put their foot on the throat, but if Australia regroup then they might get a surprise," he added.
The incident reportedly took place in a Birmingham bar and involved alcohol after Australia lost by 48 runs to England in their tournament-opener.
Warner, who appeared for a disciplinary hearing, pleaded guilty to breaching Rule 6: Unbecoming Behaviour. He will be eligible for selection for the first Ashes Test to be held in Nottimgham from July 10.
Warne felt Warner, who played for Delhi Daredevils in the IPL, had let himself and the team down.
"He knows he has let himself down but, more importantly, has to realise that he has let the team down. He has brought unwanted pressure and spotlight on the Australian cricket. I think he needs to be punished by a fine and should apologise to the rest of the team. He has to work out what is important to him. He needs to remember he should be thankful for the opportunity to play cricket for Australia," Warne wrote.