The Juventus striker was left out of Cesare Prandelli's Italy squad for the World Cup but has wished those called up in his place luck for the tournament
The Juventus forward has been a mainstay in Cesare Prandelli's team of late and was expected to make the trip to Brazil to represent his adopted country.
However, the Argentina-born striker, who is on loan from Southampton, was snubbed by the former Fiorentina boss but accepts that his competitors warrant their place.
"I had been part of this group for two years and always felt important, so I was disappointed and upset at not being called up," he told Sky Sport Italia.
"It was a strange year for me, but having always been called in the past – and even starting in the last friendly against Spain in March – I hoped to be included.
"However, this takes nothing away from the forwards that were called. The statistics show they deserved it."