The player said no because he didn't want to play in the reserve team, but in the first team. Kiko Femenía arrived instead
Antoine Griezmann, one of the most dangerous strikers that Barça will face tonight at Vicente Calderón, could have worn the Blaugrana shirt a few seasons back. According to Mundo Deportivo, Pep Guardiola wanted to sign the Frenchman, who was then at Real Sociedad, for the Blaugranas' reserve team.
In the summer of 2011, Guardiola managed to contact the player and Barça negotiate with his entourage. The problem was that Griezmann didn't want to play for Barça B but for the first team. But Guardiola and the club had already agreed on a deal to incorporate Alexis Sánchez. Eventually, instead of signing Griezmann, Barça signed Kiko Femenía, a move that ended up being a total failure."