La Liga president Javier Tebas has been forced to defend Real Madrid in the wake of suggestions Los Blancos could pay Granada to beat Barcelona.
Barca sit one point ahead of Madrid going into the final weekend of the season, which means Zinedine Zidane's side need the league-leaders to drop points against Granada, who have already guaranteed their survival.
Madrid's opponents Deportivo de La Coruna have also secured a mid-table finish, so like Granada, they have little to play for.
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In previous seasons, La Liga has been rocked by accusations of "maletines", or 'briefcase' payments made by big clubs to incentivise the league's minnows raise their game against their rivals.
Granada goalkeeper Ivan Kelava fuelled rumours by telling Goal's Italian edition that he had been told by team-mates that the practice was fairly common.
However, speaking to Spanish publication Marca, Tebas insisted: "Madrid will follow the rules and the Spanish rules do not allow any such 'bonus' payments."
La Liga alert
"We will not allow behaviour that goes against the integrity of football. We will be watching all the games, not just Granada. Recently we are more attentive to this type of thing."
Real are desperate to prevent Luis Enrique's side from winning a sixth title in eight years, but it is not in their hands.
However, while a few eyebrows will be raised if Granada do beat Barca, their run of three wins from their last four games gives them hope at Los Cármenes.
Spanish football is torn over 'maletines'. Spanish players' union president Luis Rubiales has previously suggested he did not see anything wrong with the idea.
Given Granada's recent form, Barca will be expecting a tough test all the same, but they certainly look on course to lift their twenty-third La Liga trophy.
Should Madrid be allowed to reward Granada for beating Barca? Have your say in the comments.