By Iain Rogers MADRID, Sept 12 (Reuters) - Barcelona have been careful to break new recruit Neymar in gently during the opening weeks of the La Liga season and Real Madrid are likely to follow a similar policy with Gareth Bale, even with several key players carrying injuries. Soccer's richest club by income, who like champions Barca have a perfect nine points from three matches, splashed a record 100 million euros ($133 million) to secure Bale's services and he could make his debut at promoted Villarreal in Saturday's late kickoff (2000 GMT). ... More...