The Irish Sun reports that the journalist suffered a heart attack after he was exposed and required other medical treatment before gardai could question him fully.
The man was arrested in September 2012 following an extensive stay in a psychiatric hospital in Dublin.
The Director of Public Prosecutions has decided to levy more than 50 charges against the man including sexual assault, defilement of a child and exploitation of a minor.
Gardai investigated complaints that the man had engaged in a prolonged sexual relationship with the young girl for an extended period.
Detectives investigating the allegations have seized mobile phones and computers and subjected them to a forensic examination.
The man, who cannot be named for legal reasons, has published several very popular sports books.