New Fifa president Gianni Infantino has denied any wrongdoing over his role in a TV rights deal when he worked at Uefa.
The Swiss signed off a contract with two businessmen who have since been accused of bribery, the leaked Panama documents reveal.
Hugo and Mariano Jinkis bought TV rights for UEFA Champions League football in 2006 and immediately sold them on for almost three times the price.
The contract was signed off by Mr Infantino, who was a Uefa director at the time.
In a statement on Tuesday, Mr Infantino vehemently denied any wrongdoing, saying he is "dismayed" that his "integrity is being doubted".
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.
As I previously stated, I never personally dealt with Cross Trading nor their owners as the tender process was conducted by Team Marketing on behalf of UEFA.
I would like to state for the record that neither UEFA nor I have ever been contacted by any authorities in relation to these particular contracts.
Moreover, as media themselves report, there is no indication whatsoever for any wrongdoings from neither UEFA nor myself in this matter.
The financial watchdog ordered banks and businesses to check whether they have links to a law firm at the centre of the Panama Papers leak.
In a letter to the European Council President in 2013 Mr Cameron argued offshore trusts should not be subject to new transparency proposals.
The nature of the tax avoidance carried out by Blairmore Holdings may have been misunderstood.