Pat Hickey has returned to Ireland, after what he says were an "extremely traumatic few months".
The 71-year-old was arrested in Rio in August, amid allegations of ticket touting, and arrived in Dublin yesterday evening.
In a statement released to the Irish Times, Mr Hickey said he wishes to state once again that he is "totally innocent" of all charges against him, and that he intends to adhere to any requests made by the Brazilian authorities.
The former OCI President also said he will be undergoing "ongoing medical treatment" under the care of his consultant.
Mr Hickey's statement said: "I have returned to Ireland where I will undergo ongoing medical treatment under the care of my medical consultant.
"Once again I wish to state that I am totally innocent of all charges against me."
"I intend to adhere to any requests made by the Brazilian authorities and I will do everything possible to clear my name so that I can, in due course, get on with my life with my wife and family."