NEW : Berlusconi 's lawyer complains about the number of trials the ex-PM has to attend . Milan , Italy ( CNN ) -- Actor George Clooney and soccer star Cristiano Ronaldo could be called as witnesses in the trial of former Italian Prime Minister Silvio Berlusconi on charges of sex with an underage prostitute , the court announced Wednesday . Prosecutors allege Berlusconi paid for sex repeatedly with an underage prostitute . The case is being heard in Milan, where Berlusconi's lawyers are based. Berlusconi resigned earlier this month .
NEW : Berlusconi 's lawyer complains about the number of trials the ex-PM has to attend . Prosecutors allege Berlusconi paid for sex repeatedly with an underage prostitute . The case is being heard in Milan, where Berlusconi's lawyers are based. Berlusconi resigned earlier this month .