Chelsea boss Andre Villas-Boas says a new centre-half isn't the only signing on his agenda for January.
Villas-Boas says a replacement for the want-away Alex is the priority, however.
"Regarding what we are trying to do in central defence, we are trying to close a deal [for Gary Cahill] but I don't think we will do much more than that, maybe one more player," he said.