Oh 1 is fine don't get me wrong, I just don't see both. But also Branthwaite for big money to be a rotation option is different to them signing Akanji on cheap for that role. In addition, they're a proven great team guaranteed to win trophies with the lure of playing for Pep. It's easier to convince players for those roles with that backing, like we used to do. United isn't that right now so it's tough to see.
Also in terms of the fullback thing, I dunno. Tem Hag sees Martinez exclusively as a CB and he's mentioned it quite often, while Branthwaite isn't exactly like Gvardiol who showed he's versatile throughout his career. Same with Timber at Arsenal.
Just don't see us spending 150m on center backs alone! My guess is if Yoro chooses to go to Madrid, then we'll pivot to somebody like Chalobah at Chelsea as the depth option, we'll sign De ligt, and branthwaite will be too expensive so we light choose to keep Maguire..