Martin Keown has named the Manchester United summer recruit that he believes has weakened Ruben Amorim's side in the wake of another ignominious Premier League defeat for the Red Devils.
Amorim's players travelled to north London on Sunday afternoon for a bottom-half scrap with fellow Big Six strugglers Tottenham, falling 1-0 to Ange Postecoglou's side.
The visitors were undone by a 13th-minute goal from the returning James Maddison, and currently sit 15th in the table after a difficult weekend.
While a long way off a relegation battle at present, Man United are only two points ahead of 16th-placed West Ham, and have work to do next weekend when they travel to Goodison Park to face a resurgent Everton under former manager David Moyes.