Marcelo thanked Jose Mourinho for the impact he had on his career while at Real Madrid and saluted the "great coach" following his sacking by Manchester United.
The Portuguese manager was dismissed by United on Tuesday following a dismal start to the 2018-19 season, which has seen the club fall 19 points behind Premier League pacesetters Liverpool.
Mourinho's last game charge was the 3-1 defeat to the Reds at Anfield on Sunday, as United produced a dire performance and hardly offered any attacking threat.
Recent speculation has suggested Mourinho could be lined up to take charge at Madrid at the end of the season, returning following his dismissal in 2013 after three years at the helm.
Although Marcelo thanked Mourinho for helping shape the left-back's career, he refused to be drawn on reports linking him with a return to the Santiago Bernabeu.
26 - Manchester United have picked up 26 points after their first 17 league games this season under Jose Mourinho; their worst points haul in the top-flight at this stage since 1990-91 (also 26 points). Dip. pic.twitter.com/I9iHo1uqVQ— OptaJoe (@OptaJoe) December 18, 2018
"I'm here to talk about this competition, the Club World Cup," Marcelo told reporters at the pre-match news conference ahead of Madrid's meeting with Kashima Antlers.
"I know you're asking me why; he's a coach who has been at Madrid. It's a shame, because he's a great coach and he's without a club.
"If he returns to Madrid, I am not the one who decides these things. I thank Mourinho for what he did for me at Madrid."
One player who might be keen for another change of coach at Madrid is Isco, as the Spain international has struggled for minutes since Santiago Solari replaced Julen Lopetegui.
But Marcelo thinks the situation involving Isco has been blown out of proportion.
"We all know about his quality, maybe he's the one with the highest quality," Marcelo said. "We are giving a lot of importance to something that does not need it; some play more and others less, players have moments.
"He's at Real Madrid and he is Madrid to the death, like all the players."
21 de abril 2019
|MLS Review: De Boer´s Atlanta woes continue, Nani lifts Orlando|
|Garcia beats Granados via seventh-round TKO|
|Muller: Bayern feeling title pressure|
|He parks the bus right in front of De Gea – Van Gaal critical of Solskjaer again|
|Red Sox star Eovaldi on injured list with elbow issue|
|We real cool – Lillard plays down Westbrook feud|
|Embiid trolls Warriors after 76ers take 3-1 lead over Nets|
|Allegri dismisses criticism after Scudetto success|
|Solskjaer warns of no quick-fix for Man United in transfer market|
|Klopp a hermit amid Liverpool title hype|
|Dudley is ´a nobody´ – 76ers star Embiid|
|Johnson leads RBC Heritage heading into final round|
|Pogba can´t always have things his own way, says Solskjaer|
|Whyte to face unbeaten Rivas in July|
|Clermont hold off Harlequins to reach Challenge Cup final|
|Barcelona have to suffer to win – Valverde|
|Allegri staying at Juventus and targeting improvement|
|Man United win made Sociedad tough, says Barca´s Jordi Alba|
20 de abril 2019
|Nadal: I probably played one of the worst matches on clay in 14 years|
|Sarri: Chelsea´s League Cup run on par with Tottenham´s heroics|
|Barcelona 2 Real Sociedad 1: Lenglet and Alba bring title closer|
|Inter 1 Roma 1: Perisic answers El Shaarawy stunner|
|La Rochelle edge past Sale to book Challenge Cup final berth|
|Capitals enjoy home comforts again to reign over Kings XI|
|Ronaldo proud of first Serie A season as Juventus celebrate title triumph|
|Ronaldo confirms Juventus stay after Serie A success|
|He´s showing great commitment - Gracia hails match-winner Deulofeu|
|Parker and Fulham ´discussing plans´ for next season|
|Juventus 2018-19: Ronaldo´s goals key to eighth successive Scudetto|
|I´m thankful that I´m playing for them - Vunipola grateful for support at Saracens|
|Newcastle United 3 Southampton 1: Perez hat-trick all but seals safety|
|Juventus 2018-19: Bianconeri join Europe´s fastest title triumphs|
|That point could make the difference - Ryan salutes resolute Brighton|
|Atletico Madrid defender Gimenez dislocates toe in Eibar win|
|Kovac: Patience key to crucial Bayern victory|
|Juventus 2018-19: How the Old Lady won an eighth straight Serie A title|
|Juventus 2018-19: The AC Milan team last to rule before the Bianconeri´s dominance|
|Juventus 2 Fiorentina 1: Bianconeri bounce back to seal Scudetto|
|Juventus seal eighth successive Serie A title|
|Pellegrini blames officials for more dropped West Ham points|
|Valencia appears to confirm Manchester United exit in Instagram post|
|Brumbies hold firm to see off Stormers|
|Halep on form but France draw level in Fed Cup semi|
|Pochettino refuses to criticise officials after missing out on penalty|
|Farrell guides Saracens into Champions Cup final|
|Eibar 0 Atletico Madrid 1: Lemar strikes late at Ipurua|
|Fabulous Fognini ends Nadal´s Monte Carlo winning streak|
|Bournemouth 0 Fulham 1: Mitrovic on target as Parker´s men win again|
|West Ham 2 Leicester City 2: Last-gasp Barnes strike grabs dramatic draw|
|Huddersfield Town 1 Watford 2: Deulofeu double lifts Watford into seventh|
|Wolves 0 Brighton and Hove Albion 0: Hughton´s men stop rot with stalemate|
|Now I am a genius – Guardiola applauds match-winner Foden|
|Bayern Munich 1 Werder Bremen 0: Fortunate Sule strike edges Kovac´s side closer|
|A-League Review: Brisbane Roar in historic humiliation at home to Newcastle Jets|
|Nerves played a part, admits Bernardo Silva|
|New captain Smith makes fifty as Royals triumph|
|Guardiola suggests De Bruyne´s season could be over after Spurs injury|
|Khan giving no thought to Brook ahead of Crawford battle|
|Lajovic reels off 10 straight games to stay perfect in Monte Carlo|
|Gattuso slams ´naive´ AC Milan after Parma draw|
|Manchester City 1 Tottenham 0: Foden nets first league goal as Spurs fail to dent champions´ title d|
|Waratahs rally to victory in Folau´s absence|
|De Bruyne suffers another injury in blow to Manchester City´s title challenge|
|Parma 1 AC Milan 1: Alves equaliser stuns Gattuso´s men|
|Van Dijk & Sterling lead PFA Player of the Year nominations|
|Ravalawa try seals Dragons win as Sea Eagles fume|
|Zidane cool on Mbappe to Real Madrid talk|
|Irving feels Celtics ´have come a long way´ after beating Pacers again|
|Westbrook a man of his word - George hails Thunder star after prickly win|
|Foden set for second league start, Spurs make five changes|