RB Leipzig await, having upset Atletico Madrid in the last round.
The tie puts Thomas Tuchel up against his mentee Julian Nagelsmann, for whom he set scouting analysis work in the infancy of his coaching career.
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Now they meet for a place in the final of Europe’s biggest competition.
Here is how you can watch the game live on television or through a live stream.
When is it and what time is kick-off?
The match will begin at 8pm BST on Tuesday 18 August at the Estádio da Luz in Lisbon.
How can I watch it online and on TV?
The game will be broadcast live on BT Sport 1 and BT Sport Extra 1, as well as BT Sport Ultimate – coverage begins at 7pm.
Subscribers can also stream the match on the BT Sport website and app.
Ibrahima Konate is out after undergoing hip surgery.
Marco Verratti and Keylor Navas are both set to miss out again here – Sergio Rico will deputsise for the latter. Layvin Kurzawa remains out injured, though Angel Di Maria returns from suspension. The key decision is whether Mbappe is fit enough to start after coming off the bench against Atalanta.
Leipzig XI: Gulacsi; Klostermann, Upamecano, Halstenberg, Angelino; Laimer, Kampl; Sabitzer, Olmo, Nkunku; Poulsen
PSG XI: Rico; Kehrer, Silva, Kimpembe, Bernat; Di Maria, Paredes, Marquinhos, Neymar; Mbappe, Icardi
The French champions squeezed past Atalanta in the last round but with Kylian Mbappe primed for a bigger role, at least with more minutes from the bench, Thomas Tuchel will be hoping for less drama this time. Julian Nagelsmann will have a plan, he always does, but the superstar power PSG possess should be enough to overcome any continuity and traps set by the Germans. In Dayot Upamecano, there is a force able to repel Mbappe, Neymar et al, but we’ll lean towards PSG, who should be able to finally break through having escaped humiliation by the slimmest of margins in the last round. RB Leipzig 1-2 PSG