What you haven't shown, is the still image just before this, which clearly shows Shaw begin to move out wide , which routinely prompts Maguire to rightfully move out to the space Shaw was just about to vacate. Because the guy on the ball has moved inwards, Shaw has changed his mind and is now retreating but Maguire has already made his move over.
If Maguire doesn't move over to the player Shaw nearly left, then Maguire would have been exposed to Loftus-Cheek. Posters would have been slamming Maguire for not going out to him. He was right to move out, only for Shaw to then retreat.
Because the guy on the ball shifts inwards, this SHOULD prompt Bailly (and Pogba) to take Lookman.
The onus is ALWAYS on the defender that can see the whole picture. Maguire has moved over because Shaw started to move over (and then retreated). So Bailly can see the WHOLE picture and should move inwards, and as such AWB should move inwards.
Blaming Maguire is ridiculous.
EDIT:
Here's a fraction earlier, clearly showing Shaw moving out, Maguire CANNOT leave Loftus Cheek alone, because there's a long straight ball into his feet and into his space.
resurrection pictures free