Tensions are said to be growing between Cristiano Ronaldo and Gareth Bale at Real Madrid as the two players compete to be the club's main man.

Reports in Spanish publication ​Diario Gol suggest that Ronaldo, who was substituted in the 79th minute in the 2-1 win over Athletic Bilbao on Saturday, was angry with manager Zinedine Zidane after the full-time whistle as he believed that Bale should have been brought off instead of him. 

The Portuguese international was replaced by Isco in the final 11 minutes of the game at theSan Mamés Stadium , as Los Blancos looked to preserve their slender lead. 

Whilst Ronaldo was said to be annoyed with his manager, teammate Gareth Bale is also understood to be growing frustrated at Zidane's reluctance to use him in his preferred position on the right hand side. 

Athletic Club v Real Madrid CF - La Liga

With Ronaldo being utilised in a similar position, reports by Diario Gol suggest that the Welshman believes that the 2016 Ballon d'Or winner is being given preferential treatment by his manager and that the decision to play Bale out of his favoured position is, in the player's eyes, holding him back. 

Madrid president, Florentino Perez, is thought to be monitoring the situation between the club's two biggest stars, however, having both signed new contracts towards the end of last year, it is unlikely that either man will back down as they fight to become top dog at the Bernabeu. 

Ronaldo and Bale both played a key role in assisting Karim Benzema's opener, and what proved to be the winning goal by Casemiro, as Los Blancos claimed all three points and head into the international break with a two-point lead at the top of La Liga.