1. Lindelof took the free kick quickly and pass the ball to the Henderson. You can clearly see Matic marked, Pogba marked ( ahead of Lideloff) and only Maguire was available but he was getting closed down even before Henderson played the ball.
2. Maguire is getting the ball and he quickly closed down by Sheffild player.
3. Fraction of a second before Maguire receivers the pass from Henderson. Telles on the left is being closed down. So Maguire should have opened his body and plass it to Telles who was being closed down and running back so you would pass to his weaker foot as well and he'll probably had to clear the ball unless he wanted to lose the possession. That's all hypothetical since he could pull a Messi and dribble past all Sheffild players but the most realistic option is he would had the ball and he would be faced towards Henderson anyway.
4. This is after Magure took a touch with a ball. And now we come to the part where elite passing and vision comes. He could have played the ball towards Matic in the free space and United would probably be fine. But it's a risky pass and the safest option was to pass it back to Henderson.
And the rest we know. Having watched it again frame by frame, Maguires pass wasnt the best, yet still Henderson shouldn't take a second after receiving the ball. He should have kicked the ball and thats it.