I actually think Bellerin is overrated. He's overhyped because he is Catalan and his pace makes up for his faults which is the sign of a bad player
Also he is immature
That's kind of what I'm saying. I wouldn't say he's a bad player as he still can improve a lot defensively when you consider his age, but that club he's in with that manager is poison for upcoming players. He's overrated, but still a better player than Cancelo. It's not like Cancelo isn't fast because he is. It's just that he doesn't give a damn about defending whether it is for the Portuguese National Team or Valencia. At least Bellerin works hard and tries to defend, even if his pace is the thing bailing him out.
I'd rather have an overrated player who actually cares instead of an overrated player who doesn't give a damn and thinks he's a Portuguese Cafu.
In the end though, I'd prefer not signing either of them. Bellerin and Cancelo cannot be the last RBs on Earth. There are names like Fabinho, Sidibe(even though I'm not a big fan), Ricardo Pereira, Nelson Semedo to consider. All young too.