Former Liverpool midfielder Didi Hamann blames Aaron Ramsey for Arsenal's collapse against Anderlecht.
The Gunners blew a 3-0 lead to draw 3-3 with their Champions League opponents.
"The naivety is staggering," Hamann said on Sky Sports after the game.
"They were still attacking at 3-0, 3-1 with five and six men at a time. All they were interested in was scoring goals, they didn't think about the team's success, the win.
"In the end they got the ultimate punishment. It's not acceptable for a team that wants to win trophies at the highest level.
"One thing I learned in football early on was that if you need a rest, you take it at the back, you don't run forward so you can't get back.
"In the end they attacked with five, six players, all interested in scoring.
"The main culprit was Ramsey.
"He wanted to get on the scoresheet - he wasn't interested in the team's success, whether the team was going to win or not concede and secure the three points.
"They wanted to get on the scoresheet and in the end they got punished."
