Unai Emery believes Arsenal can "do something important" after reaching the quarter-finals of the Europa League thanks to a comeback against Rennes.
The Ligue 1 side built a 3-1 lead in last week's opening leg but Pierre-Emerick Aubameyang recorded two goals and an assist in Thursday's return at Emirates Stadium to send the Gunners through 4-3 on aggregate.
That 3-0 victory followed a 2-0 home win against Manchester United in the Premier League on Sunday, with Emery's men inflicting the first domestic defeat of Ole Gunnar Solskjaer's temporary spell in charge.
"For us, today and Sunday we were competitive. I think it's good confidence for us to feel that," Emery told a news conference.
"After, I want to take to take better control with the ball and with possession. Against United and today we lost the ball a bit.
"We are going to continue working next week, we are going to Dubai. We have good possibilities in the next month to do something important.
"We can be proud today. Very difficult week, United on Sunday and Rennes today. Today we played very consistent, being competitive without the ball and serious defensively.
"I missed us being a bit more controlled with the ball, but they left a lot of attacking players in the final third which gave us space to attack them. Our match was competitive, we did well today."
Premier League clubs make up four of the Champions League quarter-finalists with London rivals Chelsea joining the Gunners in the Europa League's last eight