According to the Corriere dello Sport, Real Madrid, Barcelona and Manchester United sent scouts to view Napoli star Marek Hamsik.
The Slovak international scored their goal in Thursday's 2-1 Europa League defeat to Villarreal.
The Italian newspaper suggests there were scouts in the stands of the Madrigal stadium on behalf of Real Madrid, Barcelona and Manchester United.
It is certainly not the first time Hamsik has been linked with a move to these huge clubs, with United particularly consistent in their interest.
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