He is faster than the action where he got burned for the A gives him credit for.
Still will probably end up back at CB, especially if Oduro ends up being a good player.
He is at LB for the sake of playing time, which isn't a bad thing. Olmedo is also developing into a cracking player this season and for the sake of playing time he himself has been at RB for a couple of games too this season. So Sanchez has a bit of a headache giving all of these guys playing time. Especially now Mbacke is back and will likely be starting (though he can play RB) so it basically leaves one spot for Cortes, Cuenca and Olmedo to fight over. Not forgetting Landry who has also had to make a step back with all the options, though luckily we have the UYL for added mileage.