A Qatari investor is reportedly in talks with French football club Paris Saint-Germain about a 100 million euro ($130m) per year sponsorship deal.
AFP reported that sources in France and Qatar put the total value of the contract with a financial institution could be worth between 350 million and 400 million euros over four years.
It said publicity material released in February said that the Paris club and the Qatar National Bank (QNB) had etablished links.
PSG, which is owned by Qatar Sports Investments (QSI), said in response that it had "no comment to make on any contract", adding: "We will give details about our contracts as and when they're signed."
According to a document sent to AFP, the financial establishment in question wants to become PSG's shirt sponsor from next season. Emirates Airline is the current shirt sponsor.
Qatari investors would also like to have their name on the club's home ground, the Parc des Princes, AFP added.
Earlier this month, club president Nasser al-Khelaifi said PSG may have to wait years to achieve their ambition to win the Champions League.
Qatari investors have spent around $315.12m since buying PSG in April 2011 to sign expensive players like Sweden striker Zlatan Ibrahimovic, Brazil defender Thiago Silva and Argentina forward Ezequiel Lavezzi.
The club, however, could only finish second in Ligue 1 behind Montpellier last season.