Liverpool owners Fenway Sports Group had been seeking outside investment for the last 12 months.
The Reds owners are understood to be exploring options for the sale of the club, as first reported by the Athletic, but only recently pivoted towards opening themselves up to a full sale, it has been reported in the US.
US sports business website Sportico cite anonymous sources who informed them that major American banks Morgan Stanley and Goldman Sachs had been tasked with finding outside investment for the club for the past year but that their position recently changed to include accepting interest in a full sale.