There is no doubt you heard this, it's just the viability of it. Barcelona B is for players who are first-team prospects. I would imagine that they would only loan players to either top flight clubs, or if the player can't get a regular game in the team, clubs at a similar level in Spain. So why...
I'm glad his existence has been clarified. I thought his name had been made up.
Edit: Wiki suggests he appeared as a substitute in a Champions League game last year.
He isn't coming here.