Chelsea defender Gary Cahill has urged his team-mates to forget the Champions League exit and focus on the domestic league.
The Blues have only English Premier League games left this season, a total of 11, and the defender says it is vital to look forward and focus on winning the title.
"It's disappointing, there were two occasions where we could have gone on and won the game but it wasn't to be," Cahill told the club's official website.
"I thought my goal near the end might have been enough but as footballers you never quite know and you have to see it through to the end, unfortunately we didn't do that.
"We didn't play the way we would have liked, especially with it being at Stamford Bridge, even when they went down to 10 men, so we'll need to analyse the game and see where we went wrong. We're bitterly disappointed.
"We just didn't play very well compared to how we're used to playing. It seemed as though we lacked a bit of urgency and against teams like PSG, whether they've got 10 men or 11 men, it's very tough to win if you're not at your best and I don't think we were.
"In the first half especially the game never got going with fouls, tackles and injuries, it never quite flowed the way we wanted it to and it was similar at their place.
"We've had a couple of blows already this season and you have to bounce back, you don't have any choice.
"You don't walk away with a smile on your face but at the same time you can't be crying for days, you have to pick yourself up.
"We have to go again at the weekend, it's another massive game for us."
