Manchester United will send a scout to watch Napoli at home to Cagliari with two men in their sights, according to a report in Italy.
Barella, 22, has been impressing in a central midfield role all season and Cagliari president Tommaso Giulini recently admitted that it will be a struggle to hold on to their prized asset.
“It would be marvellous to keep him with us and grow together, but I don’t know how realistic that is as things stand,” he said.
It is believed that Barella holds a price tag of around €50million, but he is in demand and Arsenal are understood to have made multiple checks on him this season.
However, AC Milan have begun discussions with Cagliari over a potential summer deal, while Chelsea also came close to signing Barella in January.
It was also claimed in January that the Sardinian club rejected a bid from United, while Liverpool and Spurs have also been credited with interest in the player, who has five Azzurri caps.
The report also claims Ole Gunnar Solskjaer is also keen on Koulibaly from Napoli – a man that Jose Mourinho was understood to be keen on last summer.
United scouts will take in Sunday night’s game and give a update on the 27-year-old Senegal defender, who will not be easy to capture.
Napoli chairman Aurelio De Laurentiis is keen to keep the player and apparently rates him in the €150million bracket.