The two stars won seven Liga titles and four Champions Leagues during their time together at Camp Nou
Xavi has revealed he is "so sad" for his former team-mate Lionel Messi, who was forced to leave Barcelona despite his stated desire to stay with the club.
Messi's move to PSG was confirmed on Tuesday, just days after a tearful press conference during which he said farewell to Barcelona after 21 years.
The 34-year-old said he and Barca did everything they could to sign a new contract, but the deal was made impossible by what the club called "financial and structural obstacles.