His front foot defending has been really good of late. Oftentimes, he has got in front of the opposition player, nicked the ball and started an attack. However, he didn't need to rush in yesterday. By doing so, he left a massive gaping hole in our defence, which as a result, allowed Burnley to exploit the space.
In his case, I guess he thought McTominay was the wrong side and because of that, he wanted to try and dispossess the Burnley player as soon as it was played in to him. However, worst case scenario, even if McTominay couldn't get there, had Maguire stayed in the back line, then Burnley play it wide or somewhere else.
It was a rush of blood but a costly one. Before that, and even after, Burnley hardly had a sniff, but it's been too often this season that our players, not only Maguire, have been making these mistakes, which has cost us big time.