Gonzalo Higuain may not be the only new face brought in by Chelsea this January, as manager Maurizio Sarri is keen to see the club sign Napoli’s Elseid Hysaj. The Blues confirmed the signing of Higuain from Juventus on Wednesday, sparking a striker merry-go-round that sees Alvaro Morata join Atletico Madrid and Krzysztof Piatek move to AC Milan. Daily Mirror reports Chelsea may not be done adding to their squad, as Sarri is keen to reunite with another former pupil in…