Chelsea boss Rafa Benitez has hinted at "surprises" in the January transfer window.
They have also been heavily touted with a move for a striker, most notably Atletico Madrid superstar Radamel Falcao.
Speaking ahead ahead of Thursday's Club World Cup semi-final against Monterrey, interim manager Benitez said: "The club is working and always looking for good players, so we'll see if there are any surprises."