Think Koulibaly as an experienced CB would make sense alongside Romero. However we are not paying £35m for a 30 year old imo. He has 2 years on his contract so don't know how flexible Napoli would be in a negotiation but going by past history they don't really budge. Also got to bear in mind he would probably go to the AFCON with Senegal in January so we'd lose him for that period