Martin Laurence rounds up what can and can't happen next for all eight Champions League groups ahead of Tuesday and Wednesday night's fixtures in Europe's premier club competition...
"Liverpool only need a point from a home clash against Spartak Moscow to progress, while they will do so as group winners with a victory at Anfield. If the Russians were to pull off an upset they would leapfrog Jurgen Klopp's side, who would then exit the Champions League entirely if Sevilla win in Slovenia."
Manchester United may have slipped up against Basel last time out but know that short of an unmitigated calamity they will still qualify for the round of 16, in all likelihood as group winners. They host a CSKA side that would need to win by six clear goals at Old Trafford to knock the Red Devils off of top spot, in which case if Basel were to beat bottom club Benfica, Mourinho's men would miss out altogether.
Aside from the Portuguese champions, the aforementioned top three are all guaranteed a place in the Europa League knockout stages. Basel are in pole position to claim the second spot among Europe's elite but must match or better CSKA's result to do so. The Russians will guarantee a top two place by bettering the outcome of their Swiss counterparts.
Paris Saint Germain and Bayern are guaranteed first and second spot in Group B, with the former enjoying the best ever record at this stage of the group stages in Champions League history. They've scored 24 goals and conceded just once, but finish with a tough trip to Bavaria hoping to end their group campaign with a faultless record. Jupp Heynckes' side need to score at least four goals to leapfrog their visitors and win by a margin of three or more in the process.
Ironically the bigger game than the meeting of two of Europe's powerhouses is actually between Celtic and Anderlecht, who are in a straight shootout for the Europa League football third place assures. The Scottish champions comfortably came out on top in Brussels and have a strong advantage, with the Belgians needing to win by a margin greater than the 3-0 defeat they suffered in Belgium.
It's job done as far as qualification is concerned for Chelsea but Conte will be keen to avoid one of the big hitters by winning the group. They will do so if they beat Atletico but could afford to draw should Roma slip up at home against bottom club Qarabag. The Italians can top the table themselves with a victory if Chelsea fail to beat Diego Simeone's side.
The Spanish side are in danger of exiting the competition at the group stages for the first time under the Argentine, and are relying on the team that so dented their hopes of progressing in order to reach the last 16. Atleti need Azerbaijan champions Qarabag to win in Rome and must grab three points in London themselves, but are at least guaranteed European football in the New Year with a minimum third placed finish.
Barcelona have already booked their place in the next round as group winners with a superior head-to-head record over Juventus, who are fighting for second spot with Sporting. Last season's beaten finalists need to match or better the Portuguese outfit's efforts at Camp Nou when they travel to Olympiakos.
The Greeks are already out but did spoil Barca's party at home and will want to avoid exiting the competition with just that solitary point to their name. Sporting are still in the running due to their draw with The Old Lady in Lisbon but need to achieve something no side has managed since the Spanish Super Cup, inflicting the Spanish leaders' first defeat in 22 games under Ernesto Valverde.
Liverpool only need a point from a home clash against Spartak Moscow to progress, while they will do so as group winners with a victory at Anfield. If the Russians were to pull off an upset they would leapfrog Jurgen Klopp's side, who would then exit the Champions League entirely if Sevilla win in Slovenia.
All three teams have ensured a place in the Europa League at the least, with Maribor certain to finish bottom of the group but the Spanish side will have the edge over Spartak if they match or better their result on Merseyside.
Manchester City have already won Group F having boasted a perfect record thus far and will be aiming to win six from six when they travel to Shakhtar. Given PSG's more problematic trip to Bayern, Guardiola will be hoping his former charges can thwart the Parisians and present the Citizens with the chance to become the only team to progress with maximum points.
The Ukrainian champions have it all to play for though, and know that a point would be enough to pull off one of the real upsets of the group stages by sending Napoli into the Europa League. Mauricio Sarri's side are guaranteed as much but a victory over pointless Feyenoord would see them through if City were to win in Donetsk.
Among the biggest achievements of any side to this point, Besiktas have wrapped up top spot from what looked an extremely competitive group with a game to spare. They are playing for pride but also the chance to go unbeaten en route to the knockout stages when they travel to Leipzig.
The Germans must better Porto's result, meanwhile, who host a Monaco side that has already crashed out in fourth having reached the final four of the tournament last season. Porto could afford to draw if Leipzig did the same due to a superior goal difference in their head-to-head with Ralph Hasenhuttl's men.
If there is one side whose record thus far is even more impressive and indeed unexpected than Besiktas it is undoubtedly Tottenham. They've guaranteed top spot in Group H having already faced Real Madrid and Borussia Dortmund twice, only dropping points against the holders with a stalemate at the Bernabeu to this point.
They finish against APOEL Nicosia, who have a real chance to overtake Dortmund in third against a Spurs side certain to rotate. The Cypriots would do so by bettering the Germans' result against Real Madrid, and given the woes of Peter Bosz in the BVB hot seat at present, that's a genuine possibility. Excluding the German Cup defeat of Magdeburg, Bosz's side are without a win in ten games. If that stretches to 11 in Madrid, with Zinedine Zidane's side guaranteed second, and APOEL were to get a result it would surely be curtains for the Dutchman, who could miss out on a place in the Europa League having lost in the final with Ajax earlier in the year.