The highly-rated Ivory Coast worldwide has been heavily linked with a big-money move this summer, with Barca reported to have joined Arsenal and Paris Saint-Germain in pursuit of his signature.
Neymar sacrificed Barca and playing alongside Lionel Messi and Luis Suarez to join Paris Saint-Germain for a world-record €222m, with the forward expected to become the main man in the French capital.
Ever-present last season, Seri only missed four league matches for Lucien Favre's side, with two of those as a result of representing his country at this year's African Cup of Nations.
He told Eurosport: "When I was told that a Nice player was nicknamed the "African Xavi", I followed him very closely". He also warned his former club that if they don't sign him soon, he will be worth double the following year. Seri is fantastic. It has what is called in Barcelona the "Barça DNA". I didn't know him. and I was spellbound: I'm not used to seeing such a talent in midfield.
Xavi says he has been watching Seri since he heard the midfielder had been dubbed the "Ivorian Xavi" and is impressed with what he has seen. Short passing, long passing, tactical intelligence, distance shooting, personality, organising play, that last magic pass. 'madre mia!' He can play anywhere in the middle. It is an honor!