Yeah, that's the problem. Rafinha's good (if injury prone) but not good enough to be a starter and at his age won't suddenly get loads better. Whereas Alena, though I haven't personally witnessed it, people seem confident he's got real potential. Trouble is, Valverde always seems to take the safe option, meaning if it's a choice between youth and experience, even though the youth might benefit more long term, and arguably in this case has the higher ceiling, he'll go with experience every time. I guess while Alena recovers with B team it can't hurt to give Rafinha a chance. If he takes it great, if not sell in Jan and prioritise Alena.