my penny's worth:
1) Dier at fault. believe Rio said the same, it's his line, he's got the man, even if Lloris calls for it, you clear it, you don't take a chance. It's utter schoolboy defending and i mean that non-figuratively. In amateur local youth football you're told two things, never pass across your own box, and never leave a ball running through. That's not the first time Dier has failed to clear his line. Amateur. He's a PL level CB if that level is Sheff Utd or Burnley.
2) And maybe i'll save this for the Mourinho thread, but didn't understand at all bringing Lamela on. Our last shot on goal was Hojbjerg's goal in 48th minute. Mentioned before in a few times i haven't got the subs that Mourinho has made, and this is another example. If Mourinho ball is predicated on defense not making mistakes, and we've shown time and time again, our defensive side makes mistakes, then maybe you need to find another solution instead of relying on that method?
3) Rodon had a brilliant game, but suffered the same lapse as Dier and it hurt us, he gets time as he's young and will improve, but that's the second time he's made a costly mistake (thankfully the last wasn't punished vs Chelsea) - has to be smarter
Will post on the Jose thread a bit more but i would also suggest people take time to read
16 Conclusions of the game at F365, always a big fan of their analysis and they hit some nails on the head. It's grim reading though.