I’ve watched this clip for countless time zoomed in and I still can’t see any touch from his studs. His studs was no where near the ball or fodens foot . Pause at :03 second clip . when foden touched the ball , keeper foot is more then 6 inches away . The only deviation is after foden touch and hits a lump of grass.
You've got to look closer at the spin on the ball than for a foot making contact with it. As stated previously it's a touch that's so fine McCarthy wouldn't have even felt it himself but you can bet he felt his foot go into Foden's.