Tenerife manager Alvaro Cervera says that goalkeeper Jesus Owono's 12-match ban "might feel light" but he accepts that the regulations do not "specifically account for what happened".
FC Andorra's Owono, 25, was sent off after colliding with Tenerife forward Jesus de Miguel during the closing stages of the Spanish second-tier match between their two respective sides on 2 November.
De Miguel died the following day aged 30, and a disciplinary committee from the Spanish football federation confirmed Owono's suspension on Friday.
It was the maximum punishment that he could have received as the disciplinary committee could only consider the offence on the pitch and not "the tragic outcome of the incident".
"I think that, just as in other areas of life, there are rules or laws that must be followed," said Cervera, speaking before his club's fixture against Ceuta on Sunday - their first match since De Miguel's death.
"Since the current regulations don't specifically account for what happened, I believe they have simply adhered to the rules and imposed the number of matches permitted by the regulations.
"Anything else I might say would just be my own personal opinion, which I'll keep to myself. It might seem a bit light when compared to other cases, but in reality, I don't think the rules allow for anything else."
