The twitter account that posted the video seems to think it was a foul

"Here we can see a very clear foul: Fermín's face landed squarely on the sole of poor Musso's foot.

(Turpin, that Frenchman, interprets the leg extension as accidental because he felt like it—no red card, no yellow, no penalty, haha)"

Posted By: Kangol Canary, Apr 15, 18:27:02