To be honest, I'm struggling to find out the logic behind this whole "a new RB needed" thingy. Ivanovic is a dead-on starter, I rate him one of the best RB in the world and I wouldn't replace him with anyone else. If Ivanovic is not available, Luiz can play there, Essien can play there, Ferreira can play there, even Ramires will do a great job there. In addition, our youth, Hutchinson and Kane possess great potentials to be wonderful RB for us and I would love to see them given chances to play in domestic cup games. Compare to the demand of a RB, a backup goalie is much more important imo. Just imagine if Cech is injuried, we will be in serious danger no matter how great our attacking are.