Sassuolo have completed a multiple exchange deal with Frosinone, securing Daniel Boloca in exchange for cash, Abdou Harroui, Riccardo Marchizza and Stefano Turati.
Italo-Romanian midfielder Boloca quickly emerged as the ideal heir to Davide Frattesi after the transfer to Inter.
The 24-year-old helped Frosinone to earn promotion from Serie B with two goals in 31 games and now makes his Serie A debut with the Neroverdi.
Meanwhile, Sassuolo have sold midfielder Harroui and defender Marchizza to Frosinone, along with the loan of goalkeeper Turati.