Mane, 26, joined the 2017/18 UEFA Champions League finalists in 2016 from Southampton for a reported €41m (R640m) transfer fee and has developed into one of their key members of the first XI.
Alongside Mohamed Salah and Roberto Firmino, the African star has become one of the most sought-after attackers in Europe, which has prompted interest from Los Blancos.
However, the tricky winger insists he is happy to remain on Merseyside ahead of the FIFA World Cup in Russia.
"I am very happy in Liverpool and my contract will last for three more years," Mane told Salzburger Nachrichten.
"But you never know what will happen in the future."
Mane scored 20 goals and provided nine assists in 44 games for Jurgen Klopp's side across all competitions this season.