Starting left-back Ben and striker Vincent, who stepped off the bench, picked up their first Champions League experience during the game while Christian returned to action in the competition having graced European football's top table with Ajax prior to his arrival at the Club.
Goals inside the opening 31 minutes from Bernardo Silva and Thomas Lemar put Monaco in the driving seat in front of a Club record home crowd at Wembley and, although Toby Alderweireld – himself an experienced Champions League campaigner – got us back in it on the stroke of half-time, we were unable to capitalise on our chances and ended up losing for the first time this season.
On the overall outcome
"We have been building up to this point, we played all season last year to get to where we are now and then we created a performance like this – it's far from good enough and far from what we'd hoped for. We played for 365 days last year to get to this point and then to play like this, it's very disappointing."
On lessons learned
"It's the same in the Premier League and the Champions League – you get punished if you make any mistakes and unfortunately it was two small mistakes and they scored. It made it very difficult for us, we went behind and tried to fight back, we had the chances to come back but we didn't take them. Overall, if you look back at the game I think we had the chances, even before they scored, to score our goals, even in the second half, but it didn't happen."
On Sunderland this weekend
"It's always been a must-win and it still is, especially after this. We want to rise again and get back on it and that's what we need to do on Sunday."
On post-match emotions
"I'm gutted really. They were two sloppy goals to concede and they restricted us for the rest of the game. We tried hard to get back into it but it wasn't enough. It's a loss at the end of the day and that's what hurts more than anything."
On the feeling in the changing room
"It's a bit of sadness and anger. We're disappointed in the way we performed, especially early on, but we have to look back on it and try to improve for next time. It's always a test of character when you lose to see how you come back from it but that's what we have to do against Sunderland now, we have to be ready for the game and hopefully put things right at the weekend."
Comparison to feeling of Wales' Euro 2016 semi-final exit
"It is quite a similar feeling – any game you lose in football is a horrible feeling. They were sloppy goals we conceded and beyond that there wasn't really too much of a threat from them, it's just disappointing that we couldn't come back."
On his instructions when he came on
"To do something, to be important, to make an equaliser but at the end we lost so it was not enough. I want to play and I wanted to show this beautiful stadium and the fans that I could do something in this game. That was what I wanted to do but I came into the match at 2-1 and it stayed 2-1 so I was not happy."
On maintaining confidence despite setback
"The next game in the group is CSKA away so we have to go on. We have enough confidence. Today wasn't a great result but we have five more games left and our goal is still to go through. We have only lost one and we have five matches left so we will be ready for the next one."