Montpellier coach Rene Girard was left with "a lot of regrets" after his side lost a one-goal lead as they were defeated by Arsenal in their first-ever Champions League game.
Younes Belhanda's 'Panenka' penalty put the hosts ahead at the Stade de la Mosson, but two goals in two minutes from Lukas Podolski and Gervinho gave the Gunners a 2-1 victory.
And Girard is hoping that his players can learn from the mistakes of their first game and improve as their Champions League campaign progresses.
"I have a lot of satisfaction, but a lot of regrets too," he said. "We made our point by opening the scoring. But, in two minutes, we almost killed ourselves. We lost our concentration - that happens too often at the moment."
Montpellier were much improved after half-time but failed to snatch an equaliser, with Remy Cabella coming closest with an effort that hit the crossbar.
"We produced a second half full of determination, we had chances to come back but we failed to convert," Girard said. "It will be a new start this season. We threatened one of the best European teams - I don't know if that happens to them often.
"In the second half, we showed a level that was maybe our best since the beginning of the season. But we can't be happy and believe everything is good.
"I said that our possible qualification [for the knockout stages] depended to our results at home. We have only two games remaining, and it will be difficult. If we can cause a surprise away and continue in this way, we could do something interesting."