Sky’s mercatoexpert Luca Marchetti tells us today that there could be a derby between Inter and Milan for Cagliari’s Radja Nainggolan as well. Marchetti claims that AC Milan could move in on Inter in January and hijack the deal between Inter and Cagliari. This because of the good relations between Massimo Cellino and Adriano Galliani. However, Marchetti believes Inter still to be in advantage due to the long time the negotiations between Cagliari have been going on.