The Mail on Sunday says like his fellow countryman Carlos Tevez, Mascherano's transfer rights are owned by Kia Joorabchian's company and Liverpool must pay MSI £20 million if they wish to make Mascherano their own.

With FIFA planning new rules on third-party ownership, Liverpool have stalled in talks, presumably hoping that they will drive a better deal if there are more stringent rules on the practice that was highlighted by Tevez's protracted move from West Ham to Old Trafford.

Barcelona would expect to get Mascherano for less than £20m, but they could yet outbid Liverpool.