Newcastle United's Carabao Cup exit against Chelsea was painful for their manager.
Magpies boss Eddie Howe admitted he was not pleased at going out in the quarter-final stage.
As they are out of Europe as well, Newcastle only have the FA Cup as a trophy possibility this season.
On Moises Caicedo possibly getting a red card for a first minute tackle on Anthony Gordon, Howe said: "I'm going on what other people have said and they said it should be a red card.
"It's a very painful moment for us. We'll just have to accept it, digest it very quickly because we go back to the Premier League and go to Luton.
"That will be an emotional game."
On his gameplan, Howe said: "It's a very similar feeling to the end of the PSG game. The lads had committed so much, gave everything and we led for so long. We'd defended really, really well but we didn't get over the line.
"Whenever we concede we concede collectively not individually. I thought as a team defensively today we were excellent. Our shape was so good and we denied them really clearcut chances. We had to make some changes again due to injuries. I can't praise the players enough.
"We tried to refocus and forget the last part of the game and the fact that we were in a shootout to try to get to the semi-final. Penalty shootouts are always a lottery and we didn't quite win it then."