Armando Obispo has been booked in both of PSV's Champions League games so far, against Shakhtar Donetsk and RB Leipzig

That's five yellow cards in his last eight games.

He's also averaging 1.91 fouls per game, more than anyone else at PSV.

Porto forward André Silva was fouled twice against Betis and once against City, and he's the player Obispo is most likely to come up against.

Pepê could be another headache. He's second at Porto for fouls won per game and can pop up on either side of the pitch, so he could also cause Obispo some problems.

And there's also the referee to think about. Daniel Siebert hasn't exactly been shy with his cards in the Champions League this season. He's shown seven yellows in one game and five in the other.

Santiago Mouriño has committed at least one foul in every game he's started this season.

That's 11 fouls across eight appearances, including six starts, along with three yellow cards for the Villarreal full-back.

He's started both Champions League games so far, and this time he could find himself up against two Liverpool players who've been in great form lately.

Barcola has been on fire, with four goal contributions in his last two games, while Kerkez is one of Liverpool's most fouled regular starters, averaging 1.22 fouls won per game.

All three of Mouriño's yellow cards this season have come away from home. Add in the good form of the players he could face, and there's a good chance he could pick up another booking.

Porto's last Champions League game had five goals and 28 shots, and they've now seen BTTS in five straight games.

Their defence is a bit of a worry, as they even conceded against Casa Pia, the second-worst team in Liga Portugal.

The good news is that they've scored in 10 of their 11 games this season and are averaging 2.16 xG at home.

Now they're up against PSV, who have conceded in every away game this season and have only failed to score once, against Leipzig in the Champions League last week.

Even in that defeat, they managed 1.45 xG and five shots on target in Germany.

With Portugal's second-best attack taking on the second-best attack in the Netherlands, it's hard to expect anything other than BTTS.

This looks like a really exciting match on paper, and I make it slightly closer than the odds suggest with the home sides being outsiders at 3.30.

|Stuttgart have stuck with a consistent project under Sebastien Hoeness over the last few years, and have started much better in the Champions League than domestically this term. 

They’ve won both of their games in Europe by an aggregate score of 6-1, but haven’t had the same success in the Bundesliga with two wins from their opening six games. 

However, Stuttgart have been quite unlucky in the early stages of the season with their xG difference seeing them four places lower than they should be in the German top flight.

Atletico Madrid are progressing really well with a slightly new identity under Simeone, they’ve won each of their last five matches and seen BTTS in two of these games.

The LaLiga side have conceded an xG of 0.98 or higher in both of their Champions League matches so far, seeing BTTS in their opening game against Liverpool.

Barcelona are scoring a ridiculous number of goals and haven't had a single game this season where they've scored fewer than two.

They've scored 22 goals in their last five games and are averaging 3.20 xG this season.

It's hard to find anything negative to say about a team that plays just as well away from home as they do at home, but there's no denying their defence has been making mistakes.

Barcelona have conceded in six of their last seven games, and now they're facing their biggest test yet.

PSG beat Manchester City 4-2 in England and put six past Slovan Bratislava in their opening game.

But despite their brilliant attack, their defence hasn't been as convincing. They're averaging 1.39 xGA and have conceded in their last four games.

With both teams putting up such impressive attacking numbers and players like Yamal and Dembélé on the pitch, it's hard to find a better game for goals and BTTS than PSG vs Barcelona.