The club bought the 31-year-old former Tottenham, Portsmouth and AC Millan star to replace Munir El Haddadi who moved to Sevilla two weeks ago.
A statement from Barcelona on Monday said: “Barcelona and Sassuolo have reached an agreement for the loan of Kevin Prince-Boateng for the remainder of the 2018-19 season. The deal includes the option to buy the player for 8m euros (£7.1m).”
According to reports, Barcelona paid 2 million euros (£1.76m) for the loan and will present Boateng to supporters on Wednesday.
See Boateng’s career:
2004-2007: Hertha BSC II
2005-2007: Hertha BSC
2007-2009: Tottenham Hotspur
2009: Borussia Dortmund (loan)
