Depends on Holgate really. I think possibly he could do a job but 2 injuries and he is playing. Also Silva likes to use 3 CB sometimes so having 5 players gives you that option. Personally I only think we'll get one and if it's a case of one really good CB or 2 not quite as good I would prefer 1.
We cant really plan for 2 injuries, but we have Holgate and in an emergency maybe the boy Gibson, if he isnt loaned out.
Trying to keep 5 CBs happy would create some pretty big issues within the squad and its not like you can pick up quality CBs for cheap these days.