FIFA president Gianni Infantino is "dismayed" and "will not accept" that his integrity is being doubted, in relation to documents leaked from the Panamanian law firm Mossack Fonseca.
Infantino, in his former role as UEFA director of legal services, reportedly signed off a television contract in 2006 with two businessmen who have since been caught up in football's corruption scandal.
Both he and UEFA issued statements on Tuesday evening, the 46-year-old unhappy with the media's portrayal of the situation and insisting the European governing body had already "disclosed in detail all facts regarding these contracts".
Infantino said: "I am dismayed and will not accept that my integrity is being doubted by certain areas of the media, especially given that UEFA has already disclosed in detail all facts regarding these contracts.
"From the moment I was made aware of the latest media enquiries on the matter, I immediately contacted UEFA to seek clarity. I did this because I am no longer with UEFA, and it is they who exclusively possess all contractual information relating to this query. In the meantime, UEFA has announced that it has been conducting a review of its numerous commercial contracts and has answered extensively all media questions related to these specific contracts."