Even if he stays, we would still need a top CB.
Dawson is not good enough to be in the first team and may likely leave during this window.
We don't really know whether Kaboul will have recovered from his recent injury spell.
If we sell Verts, we would need to buy two top CBs.
It would be very difficult, if at all possible, to buy two top rated CBs, who
are willing to come to us, at prices approved/accepted by Levy.