Manchester United captain Harry Maguire has blamed a lack of concentration and focus for his side's lacklustre Premier League defeat at home to Arsenal on Sunday.
Pierre-Emerick Aubameyang's 69th-minute penalty extended United's dismal start to the season at home as they failed to build on their 5-0 win over Leipzig in the Champions League in midweek.
Frustrated Maguire told Sky Sports: 'It's hard to put a finger on it. It's disappointing from us - we didn't start the game well.
'We gave the ball away way too much in the first half.