Former Manchester United captain Roy Keane has blasted Ole Gunnar Solskjaer's side for their lacklustre performance against Arsenal in the Premier League on Sunday afternoon.

The Red Devils struggled to get going during the clash at Old Trafford and ultimately suffered a 1-0 defeat courtesy of a second-half penalty from Pierre-Emerick Aubameyang.

Speaking after the match, Keane claimed that he was "really, really" worried about his former club, while the pundit also criticised Marcus Rashford's body language during the affair.

"Where do you want me to start? A lack of energy, of enthusiasm, and a real lack of quality. That really concerned me. No quality, no composure," Keane told Sky Sports News.

"Some of the performances were really poor. Have they turned a corner? It's the longest corner ever. I am just not convinced by these players.

"I looked at Rashford closely today. His body language was shocking. Shrugging his shoulders when things didn't go his way? You roll your sleeves up when you play for Manchester United. I don't see any leaders out there. I am really, really worried about Manchester United now.

"A real lack of quality. There's a long way back for this club. I don't see men out there. I don't see guys who you want to be in the trenches with, guys you would trust."

United have now failed to win any of their opening four top-flight matches at Old Trafford for the first time since the 1972-73 campaign.