A Spanish state prosecutor accused former Real Madrid coach Jose Mourinho of tax fraud worth 3.3 million euros ($3.7 million) in unpaid taxes on Tuesday.
They also circulated a copy of a tax document dated July 3, 2015, which covers the period in question.
The club is thought to be wary of pursuing a player they tried to land in 2013 only to see the saga detract from securing other targets, while it has been rumoured that Jose Mourinho isn't keen.
On the latest rumors surrounding Cristiano Ronaldo's alleged plan to leave Real Madrid, the player is believed to have started reconsidering his decision after Real Madrid President Florentino Perez rallied behind him following tax fraud allegations filed by local authorities in Spain.
Manchester United manager Jose Mourinho has released a statement through his agent Jorge Mendes' company Gestifute to stress that he is "in compliance" with all his tax obligations and has not heard anything to the contrary from the Spanish tax authorities.
Former Portugal worldwide, Luis Figo, says "nobody is indispensable" amid heavy speculation that his compatriot Cristiano Ronaldo could leave Real Madrid.
Coentrao is suspected of failing to correctly declare 1.3 million euros of income.
Mourinho assumed the reins at Real the next season, and Spanish outlet AS has reported he'd signed on to replace Manuel Pellegrini on March 31, 2010, almost two months before Real's Champions League victory over Bayern Munich.
After leaving Madrid, he returned to England for a second spell with Chelsea before joining United, with whom he won the Europa League and the League Cup in the season just finished.
In 2016, soccer giant Messi, along with his father, was convicted of three counts of tax fraud equaling some $4.6 million earned from the use of Messi's personal brand.
Paris Saint-Germain player Angel Di Maria has accepted a one-year prison sentence and will pay a total of €2 million in back-taxes and fines for committing tax fraud in Spain, according to media reports.