1. I don't think that there's any clear evidence.
By all indication, at least one bag of plasma that contains EPO was matched to his DNA. His initials/code-name also appears in the ledgers (along with many other athletes), though not attached to any dates.
2. Alejandro has never tested positive.
As DIM said, because of so many false negatives, this means almost nothing. Kayle Leogrande never tested positive. Think he was clean?
3.And there are more names linked to OP, why is valverde the only one?
This is a valid argument. He has been somewhat singled out. Partly because many others in OP have retired, but he is a high profile name, and thus they've gone after him. I agree that justice has not been equal in this regard. None the less, all evidence seems to point to his doping in the past.
4 This case is kinda old, so even if he used dope in the past, he's likely not using it anymore.
What? Yes, the case is old. And I fully agree he should have been suspended over three years ago now. But to say he's likely clean not only has nothing to do with his past, and is not relevant to the present, one could argue it's presumptuous.
5. And in my eyes he has a good image. ( ok, you know what I mean)
Sure. Roberto Heras was one of my favorite riders. But that doesn't mean I think he should have never been suspended for getting caught using EPO. Sure sucks though that even after three years, no team would sign him. So, as we see, not only does the sport entirely fair, it doesn't seem to care about nice guys.
One thing to add, and here Elapid and I are probably in agreement. I think it's become almost a farce that this case is still dragging on, and almost hinged on Valverde. At this point it may be better to just consider it done, and chalk the whole thing up to a hard lesson learned. Having it drag on and on and on, getting nowhere, is arguably causing more damage to the sport than anything.