Ander Herrera has maintained his innocence after a match-fixing claim against his former club Real Zaragoza was reopened this week.
Manchester United's Herrera may be forced to face trial after an investigation into Zaragoza's 2011 victory over Levante was re-opened by authorities
Zaragoza claimed a 2-1 victory over Levante in May, 2011 and suspicious payments have been looked into by Spain's anti-corruption prosecutors' office.
The game has been under scrutiny for years, with Deportivo La Coruna relegated after Zaragoza's win, but Herrera has always distanced himself from any claims relating to match-fixing.
"I have never had and will never have anything to do with manipulating match results," Herrera reiterated this week.
"If I am ever called to testify in any judicial hearing, I'll be happy to attend, as my conscience is totally clear.
"I love football and I believe in fair play, both on and off the pitch."
According to a report in Spanish newspaper Las Provincias, up to 42 people may face trial in the investigation, with prison sentences between six months and four years expected to be issued to anyone found guilty of match-fixing.
