Across various channels, the reaction was very different.
Paris fans, who had spent the past few days quietly convincing themselves that Izan might miss out, suddenly found their optimism undercut.
Threads that had been full of predictions about how a rejuvenated Dembele, together with his other attacking partners, would exploit an Arsenal weakened by the absence of their talisman, were now clogged with frustration.
And the tone across social media reflected the split:
Arsenal fans
:"That's it, I'm packing my bag. Paris is about to see something special, and I want to see the same thing at the Emirates and not on TV"
:"We've been in freefall, but if Izan's in there, I don't care what anyone says. We will win the game. It is just a matter of how many goals the jewel of Spanish football will score."
:"He wouldn't be named if he wasn't ready. Arteta doesn't play those games. PSG are in trouble."
:"You can write us off all you want, pundits. Wednesday night will write itself."
