Blatter said possible sanctions could include a ban for the Spanish football team.

BBC: SPORT | Football | England could have walked - Fifa

"There are big question marks as to how Neymar will fit into the team as there is already one god, or demigod, at Barcelona in Lionel Messi, " Spanish football expert Jimmy Burns told CNN.

CNN: Neymar pledges to back Messi at Barcelona unveiling