I agree that he was poor for the goal and faded in the 2nd half generally, but I thought he was great in the first half. His one touch play, passing and ability to progress the ball forward were all very good.
These issues with conditioning remain however. It does seem he’s unable (or lacks the commitment) to maintain a level of fitness that allows him to continuously support the winger ahead of him through overlaps. He did some brilliant runs on the outside of Sancho (and Rashford) in the 1st half but these exertions were probably what shaggged him for the 2nd. His body type doesn’t help but a more committed approach would overcome that I feel; feels very reminiscent of Rooney.
With that in mind, I would actually prefer if we utilised Shaw more in the ‘inverted fullback’ role that Cancelo and TAA have shone in. His best qualities are all with the ball at his feet, while we’re starved of quality in the middle outside of Pogba. Allowing Shaw to step up into the half-space of midfield would take away the physical demands of having to constantly overlap, while increasing his influence on the game through intelligent and quick use of the ball. It would also help provide an overload in midfield that should, theoretically anyways, help Pogba and Bruno find space and time higher up the pitch.
Seems quite a drastic tactical shift to enable a fat bastard not to run but the effectiveness of the 'false fullback' feels pretty overwhelming at this point.