Juan Manuel Iturbe is heading to Watford on loan with option to buy, bringing Roma a total of €19.5m (£14.2m).
According to Sky Sport Italia, the deal has been done after a meeting today between Giallorossi director Walter Sabatini and Watford patron Giampaolo Pozzo.
This evening Sky Sport Italia claim the deal has been struck.
Watford will take Iturbe on loan for six months at a cost of €1.5m (£1.1m).
There is also an option to buy at the end of the season already set at €18m (£13.1m).
That would bring the total cost of the operation to £14.2m.
The 22-year-old never quite made an impact at Roma after his €24.5m move from Hellas Verona in July 2014.
He had been all set to join Juventus, but pulled out of the move when Antonio Conte suddenly resigned as Coach.
Iturbe, a Paraguay international of Argentine descent, scored only five goals in 56 games for Roma in all competition.
He also provided five assists and received six yellow cards.