The 24-year-old left the England camp
The Football Association said on Wednesday was a "pressing family matter".
Foden, who has 37 caps, has started all three of England's group games at the tournament, including Tuesday's draw with Slovenia.
England play Slovakia (17:00 BST) in the last 16 of Euro 2024 on Sunday
In Gelsenkirchen and Foden should be involved in training on Friday.
Manager Gareth Southgate's side finished top of Group C with five points from three matches.
In April, Foden and his partner Rebecca Cooke announced on Instagram they were expecting a third child.
The couple's other children are son Ronnie, five, and daughter True, who is two years old.