"Antonio has never really discussed renewing his contract at Atalanta," agent Claudio De Nicola explained on Radio Kiss Kiss Naples.
"Lots of offers have arrived over the last few months. The player has decided on a fresh start and I can tell you that negotiations are advancing with Udinese, who have been watching him since last January.
"Their President Giampaolo Pozzo has offered him a four-year deal and is ready to complete the deal. We are just waiting for the end of the season."