De Miguel handed away following his collision with FC Andorra goalkeeper Jesús Owono throughout a match on Monday.
A preliminary post-mortem has concluded that the 30-year-old died from unintentional chest trauma.
Further forensic exams are, nevertheless, pending.
In the meantime, police are investigating each the collision and the emergency medical response.
De Miguel’s funeral is scheduled to happen at this time in Navahermosa, Spain.
