Over a busy festive period, where any slip up by runaway leaders Manchester City could see United at least put pressure on their rivals, Lukaku could silence his doubters in other ways than just scoring goals.
A week ago, City players were filmed in their dressing room celebrating their latest victory by singing "park the bus", mocking the term for Mourinho's propensity to grind out results by stifling opponents with an unambitious setup.
Manchester United: David de Gea 6, Ashley Young 7, Phil Jones 6, Marcos Rojo 6, Luke Shaw 6, Paul Pogba 7, Nemanja Matic 7, Juan Mata 7, Zlatan Ibrahimovic 5, Romelu Lukaku 5, Marcus Rashford 6. The third-place champion fell 16 points adrift of City. It's probably the first time we've been stretched this season.
The goal was perhaps harsh on Burnley, who defended well throughout, as the England worldwide pounced after the ball deflected off Mee's leg to pick out the bottom corner and earn his side a share of the spoils.
Mourinho may feel less charitable when it comes to selecting his team for the visit of Sean Dyche's side, although injuries will limit his options at Old Trafford.
West Brom is only a point above last-place Swansea, which drew with Crystal Palace 1-1 in the first game since Paul Clement was sacked by the south Wales club. It is a game to win easily.
Stoke fought back to earn a 1-1 draw against Huddersfield as they continued their climb away from the bottom of the division.
City celebrate after Aguero's header.
Mourinho, who complained last week about United's December schedule, denied the fixture pile-up was to blame for them dropping more points but also refused to accept they are going through a hard spell. Leicester looked doomed when they had substitute Daniel Amartey sent off only 17 minutes after he came on, for two yellow cards in quick succession.
Just when it looked like United have managed to eke out a crucial win, Maquire slid in Marc Albrighton's cross in the final minute of the added time to help Leicester hold United 2-2.
Their own form has been a bit scattered of late, though, sporting the same two-wins-and-two-losses in their last five league matches as Manchester United.
"Now we feel frustrated and angry but we need to keep going and, from tomorrow, rest and think about the next game and have the will of finishing the next game with a much better feeling. Easy decisions to make in easy transitions to counter-attack".
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