Marcelo has been axed from Real Madrid's squad following an argument with boss Zinedine Zidane over his tactics and team selections, according to a report in Spain.
The Brazilian has found his minutes this season with Ferland Mendy often the preferred left back option.
According to Goal, Marcelo has become 'increasingly frustrated' at Zidane and that frustration boiled over on the eve of Real Madrid's LaLiga match with Granada on Thursday.
With Mendy out for the remainder of the season with a shin injury, Marcelo assumed he would play out the campaign at left back.
But Goal's report details a bust-up with Zidane during Tuesday's training session and the Frenchman elected to leave Marcelo out entirely for the squad to face Granada as a result.
In the absence of Mendy and Marcelo, academy star Miguel Gutierrez is expected to be handed the starting role at left back.
Marcelo, who is 15th on the list of minutes played at Real Madrid this season, is believed to not be alone in his frustrations at Zidane.
The Brazilian has been at Real Madrid since 2007 and has been a mainstay down the left side, making more than 370 appearances.
He is a five-time LaLiga winner and four-time Champions League winner and it is a huge call from Zidane on the eve of a must-win game as part of the title race.
Tensions behind the scenes are said to extend beyond Marcelo, however.
The 33-year-old full-back is reported to be one of a number of squad veterans who are 'frustrated' at Zidane's methods throughout this LaLiga title defence.
Last week Goal reported that there is 'a consensus' in the dressing room that a 'tired' Zidane will leave at the end of the season.
Zidane's side still have an outside shot at the title but must defeat Granada at the Nuevo Estadio de Los Carmenes to keep leaders Atletico Madrid honest with two games remaining.
Mia16
452
This is just a disciplinary action He will be back for Athletic Bilbao match
_Amala_
411
Happy birthday Big Rom⚫🔵 🇧🇪
N0_N0NsENSE
336
Barca fans be like [Crylaugh][Crylaugh]
footballlover0789
319
Fighting for his place. The creative left back with excellent play style. He is not allowed to play as he used to play with Ronaldo. the others are not capable of using his creative assists in to beautiful goals
Joacdluz
187
Ist Zidne is one the best coach in the world of football so you don't blame him and about Markelo he has try for mad club in many more times he should not be condemned if we see the facts let's talk he has try alot winning many trophies for mad club although Markelo has becoming weak gradually not like olden days but the coach himself i mean Zidean knows the player that fits a match and the one that are unfit take note that you are not the coach and you can never knows what is going on between the coach and the player if you know little you can not knowing all so leave Zidean and Macelo alone it is matter of a time.
21Legacy
172
Marcelo be warned