Wenger bemoans Arsenal's lack of efficiency in loss to Manchester United
Kieran Gibbs own goal and Wayne Rooney strike helps Van Gaal's team return to the top four with bruising 2-1 victory

A subdued and sombre Arsene Wenger was left to rue Arsenal’s lack of efficiency after his team lost 2-1 at home to Manchester United on Saturday in a game they dominated.
The hosts took advantage of a makeshift United defence to pour forward in the first half and only the excellence of visiting goalkeeper David de Gea prevented the London side from being well ahead at half-time.
We have not dominated many games against United like we did today but we were not efficient enough and made defensive mistakes
But the lack of ruthlessness and the naivety which has plagued Arsenal in recent years cost them dear at the Emirates Stadium again as a second-half own goal by Kieran Gibbs and Wayne Rooney’s breakaway finish gave United the points.
"We have not dominated many games against United like we did today but we were not efficient enough and made defensive mistakes," Wenger said.
"We had plenty of opportunities to win the game and we are very disappointed. We were a bit naive."
