Arsenal boss Mikel Arteta has asked for the handball rule to be clarified following their 1-1 draw with Burnley.
Captain Pierre-Emerick Aubameyang gave the Gunners the lead in the 6th minute.
His near-post drive had too much power for Burnley keeper Nick Pope.
Burnley were then gifted an equaliser before half-time as Granit Xhaka’s pass hit Chris Wood and deflected into the net.
Arsenal were denied two penalty appeals in the second half, despite the ball seeming to hit Erik Pieters’ arm.
Arteta questioned the decisions after the match.
Speaking to BBC Sport, the Spaniard said: “If the first one is not a penalty honestly someone has to come to the training ground and explain what a handball is. It cannot be any clearer.”
When asked about their performance in the draw, Arteta continued: “If you don’t score your big chances, if you give a goal to the opponent and you don’t get the referee’s decision when you need to it is very complicated in the Premier League to win a lot of games.
“When you have those moments in the game when you are so dominant you have to go two or three goals up and the game is over.
“We gave them a goal, it can happen in football and I demand that we play the way we do. Like the first goal we score is all the way from Bernd [Leno].
“It can happen when you play long. The only chance Burnley had was from a long goal kick from Bernd. So you need to know when to do it.
“We hit the bar and the post, they cleared the ball off the line but they defend those situations well but it is down to us not getting the three points.
“The top teams sustain results and level through 10 months in this competition and you have to come here and win the game comfortably in my opinion.”
The game was an almost perfect reflection of Arsenal’s season.
They started brightly and could have gone 3-0 up early on. But missed chances cost them, as did a big mistake from midfielder Xhaka.
Despite a late flurry, including a Dani Ceballos drive which hit the post, Arsenal could not find a winner.