Stuart Pearce has now warned Riccardo Calafiori about the ‘only problem’ he may face at Arsenal, as the Gunners close in on finalising the defender’s transfer from Bologna. Calafiori greatly impressed Pearce at Euro 2024 this summer after starring throughout Italy’s group stage ties. He started in the Azzurri’s first three games to help Luciano Spalletti’s team into the knockout stages. But the centre-half’s ban saw him miss their defeat to Switzerland. What Calafiori delivered in the heart of Italy’s defence in Germany also convinced Arsenal to target his transfer from Bologna. Although Mikel…