I see what your saying lack of pace leads to the use of the offside trap which when sprung leaves CP struggleing to get back and I do agree. The diving/sliding in is an issue (pen last week?).
We need a CB that is aggresive and will attack the ball (as Killer) and a CB that mops up (ala Claus). If the new guy plays tomorrow alongside Thomas I think it will be the new guy that takes the aggresive role with the oler head of Thomas performing the mopping up.