PSG, Barca on verge of Champions League last 16

Big-spending PSG, five-time champion Barcelona and Jose Mourinho's Manchester United are among the teams looking to book a Champions League last-16 place Tuesday. The pick of the action sees Anderlecht take on Neymar and Co in Paris, while Barcelona face Olympiakos and Roma go head-to-head with Chelsea in Italy. Here we take a look at what is at stake in each group:  Man Utd v BenficaMourinho's side can secure a place in the last 16 with two matches to spare with a win at Old Trafford, if Basel avoid defeat against CSKA Moscow.Basel v CSKA Basel will clinch a spot in the knockout phase with a second straight win over CSKA, if Benfica fail to beat United.Celtic v BayernBrendan Rodgers' team face a stiff test against Bayern Munich as they bid to keep their European adventure alive.PSG v AnderlechtUnai Emery's French heavyweight have cruised through their opening three fixtures - netting 12 goals with none conceded - and will be expected to again sweep aside Anderlecht at Parc des Princes.

He will become the second most expensive player in history. But Kylian Mbappe could be dropped for PSG. More: https://t.co/Vkt4fdG8LQ pic.twitter.com/hdC8rXDbXB

— BBC Sport (@BBCSport) October 31, 2017

Atletico v QarabagDiego Simeone's Atletico Madrid are still searching for their first win of the competition after a goalless draw in Azerbaijan a fortnight ago.Chelsea v RomaThe winner of the clash at the Stadio Olimpico will be well-placed to reach the last 16 with both teams still to play a game against struggling Qarabag.Olympiakos v BarcaThe first meeting two weeks ago saw Barca ease to a 3-1 win with only 10 men, while Olympiakos, bottom of Group D, will be eliminated if they lose and Sporting Lisbon fail to beat Juventus.Sporting v JuveSporting and Juve look set to be in a straight fight for second place in Group D behind Barca, with today’s match in Lisbon crucial after the Italians' 2-1 win at Turin.