Marcelo, 36, played for Real Madrid from 2007-2022 and left the Spanish club with 25 trophies in 546 games, including six LaLiga titles.
Real Madrid coach Ancelotti goes on trial in Spain for tax evasion.
Real Madrid signed Mbappe as a free agent in a five-year deal after the Frenchman's contract expired at Paris Saint Germain (PSG).
Xabi Alonso has signed a three-year contract until June 2028 and the 43-year-old replaces Carlo Ancelotti, who took charge of his last game on Saturday.
Real Madrid hit their stride at the Club World Cup on Tuesday, edging Juventus 1-0 to reach the quarter-finals thanks to a second-half strike from academy graduate Gonzalo Garcia.
With a game in hand, Hansi Flick's Barca are top on 66 points, three ahead Real in second
IMAGES from the UEFA Champions League matches played on Wednesday
'We've been talking during this week and now it's the right moment to announce it.'
Real booked their place in the final when substitute Arda Guler lifted a corner to Ruediger, who headed the equaliser that put Real Madrid through on aggregate.
Norwegian debutants Bodo/Glimt shocked Atletico Madrid 2-1 away in the Champions League, staging a comeback to secure a historic place in the knockout stage.
Brazilian teenage striker Endrick came off the bench to score two goals in extra time and help Real Madrid rescue a hard-fought 5-2 win over Celta Vigo.
A fan who racially abused Real Madrid forward Vinicius Jr and Villarreal player Samuel Chukwueze in two games at Mallorca last year has been found guilty and handed a suspended prison sentence.
A Jules Kounde goal in the dying minutes of extra-time handed Barcelona a dramatic 3-2 win over fierce rivals Real Madrid in an enthralling Copa del Rey final on Saturday.
Kylian Mbappe and Brahim Diaz also struck for Real, to cancel out a double from City's Erling Haaland
French reports claim Kylian Mbappe, captain of the France national team, is on his way to Real Madrid.
Vinicius Jr, who joined Real in 2018, has won the Spanish top-flight league three times with the club, apart from two Champions League and two Club World Cup titles.
The Champions League play-offs are set to deliver high-octane drama as Manchester City prepare to battle European heavyweights Real Madrid, while Celtic brace for a daunting clash against Bayern Munich, with last-16 spots on the line.
Real Madrid's Intercontinental Cup triumph marked a remarkable milestone for Carlo Ancelotti on Wednesday as the Italian became the manager with the most titles in the club's history with a total of 15 trophies.
Kylian Mbappe bagged his first hat-trick for Real Madrid as the LaLiga champions easily beat bottom-club Real Valladolid 3-0 on Saturday
Real Madrid will play local rivals Atletico Madrid while Bayern Munich were drawn against Bundesliga title challengers Bayer Leverkusen on Friday.
For Mourinho, it was an emotional night at the Estadio da Luz, capped by an extraordinary 98th-minute header from Trubin that ensured Benfica snatched a last-16 spot on goal difference.
That kept Real top of LaLiga on 50 points, one ahead of Atletico in second who missed a chance to leapfrog them. Barcelona, third on 45 points, visit Sevilla on Sunday with a chance to close the gap in the title race.
Nico O'Reilly's opportunistic strike and Erling Haaland's penalty helped Manchester City to fight back to beat Real Madrid 2-1 in a tense Champions League contest at the Santiago Bernabeu on Wednesday.
The result means Real, on 49 points, are one point clear of Atletico Madrid, who beat Mallorca 2-0, ahead of next weekend's Spanish capital derby at Santiago Bernabeu.
'We were happy with the win because we played a great game until the 88th minute, when two lapses in concentration led to two goals and we had to suffer a bit more than we should have.'
Jude Bellingham converted a penalty and Kylian Mbappe added another goal before halftime to spur Real Madrid to a 2-0 victory over Getafe.
IMAGES from the UEFA Champions League matches played on Wednesday.
A round-up of Wednesday's Champions League quarter-final second leg between Real Madrid and Arsenal, Inter Milan and Bayern Munich.
Real Madrid manager Carlo Ancelotti said that he understands the club fans booying him and his team in their 5-2 win over Celta Vigo.
A summary of Tuesday's Champions League first leg quarter-finals between Arsenal and Real Madrid, and Inter Milan and Bayern Munich.
IMAGES from football matches played across Europe on Wednesday.
His contract was due to expire in 2024, and this extension ends speculation that Ancelotti would take over as manager of Brazil.
Xabi Alonso guided Bayer Leverkusen to a double last season as they won the German Cup and lifted their first Bundesliga title without losing a game.
Kylian Mbappe was in inspired form, scoring twice to guide Real Madrid to a comeback 4-1 win over visitors Las Palmas on Sunday.
Barcelona missed the chance to reclaim the LaLiga summit after suffering a 2-1 derby defeat to Girona, who roared back in the second half to leave Real Madrid top of the table.
Real Madrid got their LaLiga title defence off to a limp start as they were held to a 1-1 draw at Mallorca.
A round-up of the UEFA Champions League last-16 first leg matches played on Tuesday.
LaLiga leaders Real Madrid's pursuit of a record-extending 36th Spanish title
Lille coach Genesio hails perfect night after win over Real
A round-up of Saturday's action in LaLiga, Ligue 1 and Serie A