More serious, if not a former player/coach (hard to find one that is in good relation with Laporta though) I think it will be one of the oldest still living socios and/or someone who was there when Camp Nou was opened in 1957.
Yeah, new tickets became available for the CL final, ehm I mean LaLiga match against Bilbao. Most likely from members who decided to resell their tickets seeing these prices to make a profit. Resell your season ticket 3 times with these prices and you refinanced your whole season ticket.
It's probably Ronaldinho. The Laporta regime started with his signing.
I'd personally go with cult hero Oleguer. That way we will know whether or not the toffs at the game Saturday are true fans if they start signing Uh-Uh-Oleguer.