Real Madrid insist they have "full confidence" in Cristiano Ronaldo with the forward facing allegations that he defrauded the Spanish tax office of €14.7m (£12.9m).
The Portugal captain has been accused by Madrid's regional state prosecutor of four counts of tax fraud relating to image rights payments - which have been denied by Ronaldo's representatives.
LaLiga champions Real Madrid, who signed the 32-year-old from Manchester United in 2009, have backed their star player to "prove his total innocence".
A statement on the club's official website read: "Real Madrid CF shows their full confidence in our player Cristiano Ronaldo, who we understand has acted in accordance with the legality regarding compliance with their tax obligations.
"Real Madrid CF is absolutely convinced that our player Cristiano Ronaldo will prove his total innocence in this process."
The state prosecutor alleged Ronaldo used an off-shore company to hide a portion of his income from the tax office.
However, a statement from Ronaldo's management company Gestifute insisted the company, Tollin, which was established during Ronaldo's time with Manchester United, has acted in accordance with British and Spanish tax laws.