Qatar Sports Investments, which owns Paris St-Germain, is one of three parties interested in the club.
The company is run by Nasser al-Khelaifi, a friend of Radrizzani.
The Italian said a Leeds fan based in America and the owner of an unnamed side in Italy were the other two keen to invest in the Championship club.
"The option of Qatar Sports Investments and Nasser (al-Khelaifi) - first of all they are friends, we have had a good relationship for a long time," Radrizzani told The Times.
"They have the possibility to bring this club to compete with Manchester City, so for the fans that could be a fantastic opportunity."