Andre Onana was at fault as Man Utd twice blew two-goal advantages to draw 3-3 at Galatasaray and leave their Champions League knockout chances in doubt.
Arsenal cruised through to the Champions League last-16 as group winners after a breathtaking first half saw them beat Lens 6-0 at the Emirates.
Two late goals by 19-year-old Nico Paz and Joselu gave Real Madrid a 4-2 fightback win against Napoli on Wednesday, securing top spot in Champions League Group C.
The VAR who reviewed the penalty awarded to PSG against Newcastle for handball has been stood down from his game on Wednesday, Sky Sports News understands.
Erik ten Hag says he must take the blame for Manchester United's Champions League capitulations, with their hopes of progression hanging by a thread.
Celtic's European campaign was ended by Ciro Immobile's late double as they fell to a 2-0 defeat to Lazio in the Champions League.
Eddie Howe says Polish referee Szymon Marciniak needed to be stronger to stick with his on-field decision as Kylian Mbappe's last-gasp penalty denied Newcastle victory.
The Sky Sports football writers analyse the biggest talking points from this week's Champions League games.
After matchday five, how are the British sides faring in the Champions League - who can still go through, who's teetering and who is out?
Former player Mike Phelan helps tells the legendary story of when Manchester United were beaten and battered away to Galatasaray in 1993.
Holders Manchester City beat RB Leipzig 3-2 at the Etihad after a stunning second-half comeback to secure top spot in Champions League Group G.
Manchester United's Champions League hopes are in tatters as 17-year-old Roony Bardghji's late winner saw Erik ten Hag's side slump to a 4-3 defeat in Copenhagen.
Joao Cancelo and Joao Felix earned Barcelona a 2-1 comeback win against Porto to book their spot in the Champions League last 16 for the first time in three seasons.
Newcastle had to settle for a 1-1 draw away to Paris Saint-Germain following a cruel stoppage-time penalty decision as Kylian Mbappe converted from the spot.
Celtic have been fined £25,000 (€29,000) by UEFA for incidents involving their supporters at last month's Champions League draw at home to Atletico Madrid.
Ex-Barnsley boss Gerhard Struber tells Sky Sports about going from working in insurance to leading Red Bull Salzburg, the Champions League's youngest-ever side.
Arsenal edged closer to the Champions League knockout stages as Bukayo Saka's goal and assist helped them to a commanding 2-0 win over Sevilla at the Emirates Stadium.
The Sky Sports football writers analyse the biggest talking points from Wednesday's Champions League games with Man Utd and Arsenal both in action...
Erik ten Hag described Manchester United's performance in their 4-3 defeat at FC Copenhagen as "very good" and pinned the blame for the result on the officials.
Real, Bayern, Inter and Sociedad all booked their places in the knockout stages of the Champions League with two games to spare on a dramatic night of European action.