Five teams have already booked their place in the Champions League knockout stage - so who are going to take the final 11 spots as we enter round five of matches?
Celtic and Rangers, meanwhile, are both already out of the Champions League though they still have a chance of dropping into the Europa League.
We take a look at who needs what in this season's competition.
Group A
| Team | GP | W | D | L | GD | Pts |
|---|---|---|---|---|---|---|
| 1 - Napoli (Q) | 4 | 4 | 0 | 0 | +13 | 12 |
| 2 - Liverpool | 4 | 3 | 0 | 1 | +6 | 9 |
| 3 - Ajax | 4 | 1 | 0 | 3 | -4 | 3 |
| 4 - Rangers | 4 | 0 | 0 | 4 | -15 | 0 |
Qualified: Napoli
Already out: Rangers
Wednesday: Ajax v Liverpool, Napoli v Rangers (both 20:00 BST)
Liverpool just need a point in Amsterdam to seal their place in the knockout stage.