Arsene Wenger has rasied his finger over the referee as he believes Everton's late equaliser against Arsenal should have been ruled out as there was a foul and an offside in the build of the goal.
Gerard Deulofeu scored a stunning goal for Everton in the 84th minute as the on-loan Barcelona star came from the bench and helped the Toffees to avoid defeat after Mesut Ozil had given Arsenal a lead four minutes earlier.
The Gunners could have extended the lead to seven points if Deulofeu's goal was disallowed as the north London club are on top of the table with 35 points and are five points ahead of second place Liverpool.
"I think it was offside and he [Lukaku] made a foul on the goal, but the referee didn't give it," the Arsenal manager explained.
"Koscielny can take the cross, head the ball, but he cannot do it because of [Lukaku's] overhead kick, but it doesn't mean we have to concede a goal behind that."
"You have to give Deulofeu credit, he took his goal well. I just feels that when we got out of the pressure, and got into the passing, they stopped us every time with a foul," Wenger added.
Arsenal have a tough set of fixtures in the coming weeks as they face Napoli in the crucial Champions League encounter, before facing Manchester City and Chelsea in the league. In addition to this, the Gunners face Tottenham Hotspur for the third round FA Cup tie early next year.
A victory over City and Chelsea would make them firm favourites to win the league this season.
Meanwhile, Mikel Arteta claims his former club Everton were the best side Arsenal have faced this season. The Gunners registered a victory over the Spurs and Liverpool, before losing to Manchester United at Old Trafford.
"Everton are the best side we have faced this season in the Premier League. They been getting results because they are doing things right. They have a good mix of players and are hard to deal with," Arteta told the BBC.
"It was a really tough game, a really high tempo game. They dominated the first 35 minutes or so but after that we had three clear chances. In the second half we were the better side," the Spaniard concluded.