Not sure where in the back 3 the players we're being linked with play but in reality we need at least 2 players in that area as we don't currently have any back up barring the youngsters, who I'm really not sure are ready yet.
Realistically if we want 2 players for each position we need 3 CB's but surely we can find 2 with at least one of them able to deputise for Egan if need be.
Sanderson and/or Darling both look right footed so in theory could push Bash or Egan. Clarke-Salter is left footed so could push JLT.
One things for sure it's probably the area where we have the least options if injuries or loss of form happen.