Nowadays, Spain's courts have been busy tackling the alleged and real multi-million-euro tax evasion of football's greatest stars. Real Madrid star Cristiano Ronaldo, accused of evading 14.7 million euro ($16.5 million) in tax, has been summoned to appear before a judge in Spain, judicial sources told AFP Tuesday.

The 32-year-old Portuguese star is facing four charges of fraud through offshore companies between 2011 and 2014. The hearing will take place at 09:00 GMT on July 31 in a court at Pozuelo de Alarcon, in the suburbs of Madrid, according to Spanish press reports. Prosecutors accuse Ronaldo, who is the world's highest paid athlete according to Forbes magazine, of evading tax via two companies based in the British Virgin Islands and Ireland. The four-time world player of the year who said last week his "conscience is clear" is threatening to leave Real Madrid over the affair. Ronaldo is currently on duty for Portugal at the Confederations Cup in Russia which ends on July 2. Manchester United manager Jose Mourinho was also yesterday accused of evading 3.3 million euro ($3.7 million) in tax at Real Madrid, the public prosecutor's office in Madrid announced.

The 54-year-old Portuguese, who coached Real Madrid from 2010 to 2013, was accused of "two offences against the public treasury," the office said in a statement. Meanwhile, Ronaldo has been linked to Manchester United and other top clubs after reportedly threatening to leave Real and quit Spain. But the club's president Florentino Perez insisted yesterday that Ronaldo will be staying at Real Madrid and no offer has been received to tempt him away.