After the edgy 1-0 triumph in Balaidos, Arbeloa made a surprising comment about the team's absentees.
The coach said, "I'm very happy for the people who wanted to come..."
Marca says Arbeloa didn't name names, but he did hint at some unease with the commitment of certain players during a delicate moment for the team.
One of the names that has come up in the debate is Eduardo Camavinga. The French midfielder has missed the last two matches due to a dental problem stemming from a cavity.
However, the player did train the day before the match against Celta Vigo and was ultimately left out of the squad.
The situation has raised some eyebrows, as it seems surprising that neither the player nor the medical staff have been able to resolve a dental issue within a week.