Former Arsenal boss Areene Wenger slammed PSG's players as "stupid" after their Champions League defeat to Manchester City.

Wenger believes PSG's second-half collapse was due to their poor discipline.

Speaking about Riyad Mahrez's free-kick, Wenger told beIN SPORT: "From the defenders turning their back, it's between Paredes and Kimpembe. Why do you lie a guy on the ground if the guys in the wall open the wall?'

"I personally believe that the second goal is not acceptable for that level. It's not the first time we see players turning their back and City took advantage of that.

"But I must say in the second half PSG were protective and not progressive any more. Is it because they were not physically capable?

"After the 1-1, they collapsed completely. They become emotional and aggressive in a stupid way."

PSG became visibly irate as the second half turned against them with Neymar particularly getting embroiled in spats off the ball after a first half where he shone for the French giants.

"What was very interesting tonight is that you could see that when it was 1-1, PSG mentally collapsed," Wenger added.

"This is as well the consequence of this team losing eight games in the league. This has an impact in this kind of situation.

"When it's 1-1 the team knows they have lost many games, they carry that. It's not like the season before when they were unbeatable in the league.

"You could see the confidence dropped considerably and the mental impact when Man City equalised, for the semi-final of a Champions League, was too big."