* Neymar to decide between two unnamed clubs * Offers believed to be from Barcelona and Real Madrid (Adds details) RIO DE JANEIRO, May 24 (Reuters) - Brazil's Neymar is on the verge of choosing one of two offers from unnamed clubs, likely to be Spanish suitors Barcelona and Real Madrid, after Santos agreed on Friday to transfer him. Santos made the announcement on the club's official Twitter feed and said the 21-year-old player, Brazil's big hope for next year's World Cup finals on home soil, had the right to choose which offer to accept. ... More...