they don't need to be with the dpp rule change this year
Unless you trade Morris or Ellis for a dpp then yes you do!
Who is going to take Scotlands place in the midfield?
Example; I hit the trade button on Shiel and because I have Smith in my fwd line DT gives the option of bringing in a fwd and moving Smith to the mids but, I have no dpp to the backs so I cannot trade Shiel for let's say Duffield.