Jose Mourinho will appear in a Madrid court two days before his Manchester United side takes on his former side Chelsea.
The Portuguese is accused of defrauding the Spanish tax authorities of £2.9million during his time as manager of Real Madrid.
And he has been ordered to appear in court on November 3 and is alleged to have defrauded the authorities in 2011 and 2012.
Earlier this year a prosecutor claimed Mourinho benefited from not declaring his income from the use of image rights.
Mourinho spent three seasons with Real Madrid before departing in 2013, and subsequently returning to Chelsea.
He won one La Liga title with Los Blancos and when the claim was made in June, he released a statement denying the accusations.
It read: ""Jose Mourinho has not received any notification with regards to the news published today.
"To this date, neither the Spanish tax authorities, not the public prosecutor have contacted Jose Mourinho or his advisers who were hired for the inspection process.
"Jose Mourinho, who lived in Spain from June 2010 until May 2013, paid more than €26m in taxes, with an average tax rate over 41 per cent, and accepted the regularisation proposals made by the Spanish tax authorities in 2015 regarding the years 2011 and 2012 and entering into a settlement agreement regarding 2013."