Councillor Doug Ford says he is considering taking the Globe and Mail to court.
Mayor Ford's brother and campaign manager is firing back at the newspaper after it published allegations the Fords tried to help a client of the family's label company land printing contracts at City Hall.
While Councillor Ford admits the Ford's business, Deco Labels and Tags, has done work for US printer RR Donnelley, he says he has never lobbied for them.
With the help of Mayor Ford and his staff, meetings were set up between officials at Donnelley and senior City Hall bureaucrats.
Donnelley did not win contracts from the City but Toronto's public service watchdog is investigating, after the Globe's initial report on the matter last month sparked several complaints from the public.
When asked on Monday, Mayor Ford said he was unsure whether RR Donnelley was, in fact, a client of Deco Labels.
Mayor Ford later released a written statement denying he did any lobbying of City officials on Donnelley's behalf.
The Ford brothers insist they were doing nothing more than looking to get City Hall a better deal on printing services.
"We had that meeting to save millions of dollars for the taxpayers," Councillor Ford said.
Municipal lawyer John Mascarin does not believe that explanation will hold water with City Hall's Integrity Commissioner.
"You might have the public interest at heart but there is still an apprehension of bias." he says.
"Most municipal codes of conduct seek to preclude wearing 2 hats at the same time and in my view, that seems to have been done ... by the Brothers Ford."
It is not clear whether the Integrity Commissioner will report her findings on the allegations before October's municipal election.