FIFA end dispute with French club Lens over the signing of teenager Gael Kakuta . Court of Arbitration for Sport ratifies agreement with French Premier League leaders . FIFA had banned Chelsea from making signings until six months after complaint by Lens . Premier League crisis club Portsmouth have fourth change of ownership in mid-2011 .
Chelsea end dispute with French club Lens over the signing of teenager Gael Kakuta . Court of Arbitration for Sport ratifies agreement with English Premier League leaders . FIFA had banned Chelsea from making signings until mid-2011 after complaint by Lens . Premier League crisis club Portsmouth have fourth change of ownership in six months .