I still have hopes that Grimaldo doesn't leave Benfica before Lucho leaves, so he can come back, but that's utopia at this point. He'll join City and we'll have to do with Alba/Digne for now.
Re Grimaldo/Cucu: When Grimaldo was in the Juvenil stages, everyone knew he'd be one of the best LB's in Europe based by talent only. With Cucu it's not like that, although, as said, he does have talent, the work ethic and mentally to make it. He will need good coaches and chances for that to happen. It's so important to note that Puyol wasn't even that good when he was younger. He was constantly told that the first team was way above what he could do, but he constantly told himself that if he'd work hard enough, it would happen, and now he's (arguably) the best CB in our history. Same can happen for any La Masia player, and it's happening partially with Palencia these days. Even though Cucu has never been an outsider in La Masia, being a regular since he joined from Espanyol, he has the same mentality, from what I've heard.