By Hannah Pinnock Chelsea host UWCL holders Barcelona at Stamford Bridge on Saturday for the second leg of their semi-final clash. Emma Hayes’ side hold a one-goal advantage heading into the weekend’s fixture after Erin Cuthbert scored the only goal of the first leg in Barcelona last week. However, Chelsea are well aware of the threat their opponents pose as their Champions League hopes have been shattered twice by the Catalan club in the last four years. Barcelona are the current holders of the competition and will be hoping to reach the final for a fourth consecutive year. Chelsea, on the ot…