Marcelo: Olympiakos sign Brazilian left-back after 15-year spell with Real Madrid
The 34-year-old left Real Madrid as the most decorated player in the club's history, winning 25 trophies during a 15-year spell with the club.
He won his sixth La Liga title and a fifth Champions League trophy last season, playing a total of 18 times.
It has been reported that he has signed a one-year deal with Olympiakos with an option for another year.
The club currently sit third in the Greek Super League after two games this season.
Marcelo, who made 546 appearances for Real Madrid, won 58 caps for Brazil after making his senior international debut in 2006.
He has been linked with moves all over Europe since departing Real Madrid, and was it had been reported that he was in talks with Premier League side Leicester City on deadline day, but the Foxes denied such a deal was in the works.
Olympiacos confirmed the signing of Marcelo on Friday night, with the Brazilian signing an initial one-year deal with the option for a further 12 months.