Since his arrival in Barcelona, Neymar has been projected as the star of the future - the player waiting to take Europe by storm when Messi starts to step down. It seems Neymar didn't get that schedule, though, as he's ready to take the continent over right now.
If you have spent time around any Barcelona fan, site, or forum in the last two or three seasons, you've probably heard something along the lines of, "Neymar is going to be an absolute stud when Messi's too old to keep going." There's this idea among the fan base that Neymar is the star elect, just waiting for Messi to move out of the way to show the world he's a star.