The Italian may have been caught on camera attempting to silence his critics.
Several reports have claimed Arsenal are close to signing the player, with new kit makers Puma eager to help with any potential fee.
Chelsea, Manchester United, Tottenham, have also been linked with a move for the enigmatic attacker, who has enjoyed difficult periods in Italy since returning to Serie A.
But after last night's behaviour in the fallout from Italy's win over England, he may find Premier League supporters a little less welcoming.
The AC Milan striker, who scored the winning goal with a great header past former teammate Joe Hart, seemed understandably delighted at the final whistle.
His teammates and coaching staff came over to congratulate him for the goal that ensured Italy move into the second round of fixtures as heavy favourites to win Group D, but as the camera followed him walking out onto the pitch to milk the fans' applause, the controversial forward threw up his hands to illustrate the scoreline to the watching millions, followed by holding his finger up to his lips to seemingly silence whoever he felt was watching.
It was reminiscent of Arsenal's own Theo Walcott making gestures to Tottenham fans in their FA Cup loss to the Gunners.
It may have been an indication that the 23-year-old wished to hush fans and press in England who he felt had unfairly picked on him, though his time at City did little to indicate the Italian didn't enjoy the attention.
Or it could have been a more general indication as to his influence on the scoreline, with Italian press also regularly getting on his back.
Whatever he meant by it, it seemed to show the Italy star may still have a little more maturing to do.