Manchester United are intensifying their interest in Napoli defender Kalidou Koulibaly.

Gazzetta dello Sport says a central defender is still on United's transfer wishlist.

And Old Trafford chiefs are preparing a 'mega money' move for the Napoli defender. It's suggested have 'stepped up' their interest in the Senegal defender.

Koulibaly would cost United around €150m.

The stopper has attracted past failed offers from United over the last 18 months.