But for Arsenal, who are in Group B, of course they are currently favorites to qualify for the round of 16 and there is also an interesting competition in group E because Feyenoord and Atletico Madrid and Lazio have a fairly close point difference. So the second leg of the group stage matches will be utilized as best as possible by several teams to change their fate in the standings.
Arsenal should definitely qualify for the next phase and I don't doubt that either. This will be a big stage for Arsenal and they can compete with other strong European teams in this competition while continuing to hone their experience at the highest European level.
Group E can be said to be filled with several strong teams that can always be regulars in the round of 16 and indeed the difference is not too much. Maybe Atletico will still be the team that advances to the next round and maybe Feyenoord is more worthy to accompany Atletico than Lazio. We know that Lazio is actually not that good and I think Feyenoord can steal points against Lazio in the second round.
Feyenoord seems to have the best chance of qualifying from Group E to the next stage of the Champions League. But as for the second team that will qualify, I still doubt whether it will be Lazio or Atletico Madrid. Because actually, with just one match, the ranking change in Group E will occur immediately. But for Celtic it seems they will only reach the group phase.
In Group B, I actually predict that Sevilla will accompany Arsenal to qualify for the next stage. But looking at the current points tally, Lens seems to have the best chance of qualifying for the next stage from Group B with Arsenal. Sevilla looks like they could end up back in the Europa League.