"Also, because we are going to play a lot of matches, in the next 10 days we play four matches - each of them very important ... it is in our planning to start with Laurent Koscielny".
Arsenal have already booked their spot in the knockout stages, meaning Emery is likely to give plenty of youngsters an outing at the Emirates - as he did against Vorskla Poltava in Kiev last month.
Oh, and Carl Jenkinson starts... not sure what you want to do with that information - but Martin Keown says that It will be his very last chance to prove himself under Unai Emery. "His personality is very important, [he tries] to take players on and break lines".
"I think it's disgusting honestly, and I really do credit Raheem for coming out and standing up for himself and other players and speaking about it. Raheem is a good courageous lad for doing it".
"Also this player today, [Eddie] Nketiah, with us also [he gave] a good performance".
"Today is another step for [Koscielny]", Emery told reporters.
'We need to know tomorrow and Saturday how he is going to feel after this match to see if he can help us on the pitch on Sunday. "When he is coming back like today with us, I think every Arsenal supporter is happy, and so is the player".
'He can take confidence again, take rhythm and then we are going to continue our process, maybe Sunday.
Koscielny has played two games with the under-23s after returning from a torn Achilles tendon and is set for his first Arsenal appearance since May in Thursday's game. "We need [to go through] a process with them, but in this process they need also to show us their development".
Arsenal provisional squad: Leno, Martinez, Cech, Bellerin, Jenkinson, Lichtsteiner, Koscielny, Papastathopoulos, Medley, Monreal, Kolasinac, Xhaka, Elneny, Gilmour, Torreira, Willock, Maitland-Niles, Guendouzi, Ramsey, Smith Rowe, Iwobi, Ozil, Mkhitaryan, Lacazette, Aubameyang, Saka, Nketiah.
He said, "I still feel like I am improving and getting back to my best".