Key Tuesday storylines
- Galatasaray host Stuttgart in one of two early kick-offs, looking to continue their winning run after beating Lille last time out
- Last season's beaten semi-finalists, Atletico Madrid and Bayern Munich, face each other in the Spanish capital in one of Tuesday's headline clashes
- Aston Villa face their sternest test of the young season as they welcome free-scoring Barcelona to Villa Park, with Anthony Gordon facing a Premier League club for the first time since moving to Spain in the summer
- Michael Carrick's teetering reign continues as Manchester United face Roma from 21:00 CET - can he survive with a defeat tonight?
Live updates
17:49 CET - All eyes will turn to the pitch for Sporting CP this evening as they travel to London to take on Shakhtar, after a few turbulent days off it.
With Rui Borges having departed, the Portuguese side have reportedly agreed a deal to bring in Lyon coach Paulo Fonseca, and it is unknown whether he will be in attendance at Stamford Bridge this evening.
For the Ukrainian outfit, Alisson gets the nod on the right wing just days after his first-ever call-up to the Brazil national squad.
He spoke to Flashscore about his time with Shakhtar and his aspirations with Carlo Ancelotti.
17:39 CET - To Istanbul for our first team news of the evening, where Galatasaray's two in-form players, Victor Osimhen and Alexey Batrakov, both start for the hosts, whilst Rafael Leao and Ilkay Gundogan have been named on the bench.
For Stuttgart, they are unchanged following their morale-boosting 4-2 win over Bayer Leverkusen in the Bundesliga last time out.
Although our graphic has them with a back three, we expect them to stick with a 4-2-3-1.
17:15 CET - Good evening and welcome to our live coverage of Matchday Four of the UEFA Champions League.
Team news for our two early games - Galatasaray vs Stuttgart and Shakhtar vs Sporting - will be out shortly, so let's catch you up on how the competition is shaping up after three games.
Only PSG, Aston Villa, Liverpool, Real Madrid and Real Betis remain with perfect records, whilst Stuttgart, Bayern Munich and Arsenal join them as the remaining unbeaten sides within the top 16.
Looking at the bottom of the table, Porto are the surprise side to be struggling in this year's Champions League.
They have lost all three games, as have Lille and Slovan Bratislava, both of who are in action this evening against Bodo/Glimt and LASK, respectively.
Harry Kane leads the scoring charts with four goals and two assists, whilst a hat-trick last time out sees Nicolo Tresoldi join him on four
