The Red Devils boss was left incensed by a refereeing decision on the touchline, meaning he kicked out in frustration
Jose Mourinho was forced to apologise to a small child at Old Trafford after kicking a wall in frustration.
The Manchester United boss seemed annoyed, despite watching his side fight back twice to claim a 2-2 draw with high-flying Arsenal.
And it seems the frenetic pace of the match took a toll on Mourinho, despite securing a point.
Lucas Torreira was caught in midfield on the ball, waving his arms in protest as he went down. To the chagrin of the Red Devils manager, referee Andre Marriner awarded the diminutive midfielder a free-kick.
With his frustrations getting the better of him, the Portuguese boss got out of his seat and kicked the wall beside him.
Realising his mistake, the 55-year-old apologised to the young spectator in the stand.
Jesse Lingard rescued a point for the home side in a fast-paced clash under the Old Trafford lights.
This is the second time in as many weeks the former Chelsea and Real Madrid boss has become so frustrated he has lashed out at an inanimate object close to him at Old Trafford.
Following Marouane Fellaini’s last-minute winner against Young Boys in the Champions League, the United boss picked up a water bottle carrier and duly slammed it to the ground.