Lucas Silva is unlikely to join Real Madrid in January with the Spanish giants not planning to make any transfers.
Ravel Morrison has returned to parent club West Ham from Cardiff City on compassionate leave.
The 35-year-old Italy international has scored more than 180 goals for the Serie A side and now looks set to end his career in Udine after agreeing a deal that could see him stay until 2016.
The statement read: "Udinese Calcio are pleased to announce they have agreed to renew the contract of striker Antonio Di Natale until June 30th 2015 with an option for a further season, too.
"The number 10 is embarking upon a tenth consecutive season in the Udinese jersey and, as most hoped, is set to end his sporting career in Udine."
Di Natale scored 23 league goals for Udinese last season - a tally he has reached in each of the last four campaigns.