The Premier League trio have bought shares in the third division club, who will reportedly cease to exist if they do not raise £1.6m within the next fortnight.
"Myself, Mata and Cazorla have all bought shares but it would be wrong of me to say how much," the Daily Mail quotes Michu as saying. "We just wanted to try and help save the club we all played for.
"The economy in Spain is very bad and the club needs around [£1.6m] to survive. A lot of people have bought shares and hopefully it will be enough by the closing date of November 17. It's my local club, a club I love, so I hope it will be enough."
All three players began their careers in Asturias.