Chelsea transfer news: Nicolo Barella issued warning as £45m move eyed

“This year he has reached the maturity that everyone wished for and was not obvious,” Minotti told Tutto Mercato Web.

“He has potential, [and] has made a leap in quality in terms of maturity.

“He took responsibility and now manages to manage the game emotionally, makes himself warned less [by the referees].

“If the market rumours are true, Cagliari must be careful not to deprive itself of a central and fundamental player.”