Six significant shareholders opposed to the proposed sale of Irish Continental Group (ICG) to a consortium led by chief executive Eamonn Rothwell for €.1.2 billion have described the deal as “an inequitable transfer of value” from existing shareholders to the proposed new bid company. The investor group, who, combined, own 11.5% of ICG’s shares, wrote to John McGuckian, the chairman of the Irish Ferries-owning company since 2004, saying they intended to oppose the proposed take-private at the price of €8.00 a share on Wednesday.  Each of the shareholders stressed to McGuckian that they were acting independently and solely on the…