Liverpool owners Fenway Sports Group are believed to have turned their attention to an alternative deal after seeing plans for a £68m acquisition fall through this week. FSG made Liverpool their first investment in the world of football in a £300m deal in 2010, after which they have expanded their sports empire even further. In addition to Liverpool and baseball giants the Boston Red Sox, FSG now own NHL side the Pittsburgh Penguins and a stake in the PGA Tour. But in terms of their ceiling as a capital appreciation project, Liverpool are arguably still the jewel in the crown. FSG supremo John…