There will be a valid reason for his return home, FA respecting his privacy.
Presumably everything isn't OK. No wish or need to speculate, though. Hope all gets sorted, resolved whatever it is.
Luke Shaws grandmother passed away just before the first game, according to the pressDuring the match yesterday Spanish TV La1 referred to a player whose grandfather had just died. But did not name him. Evidently the player received a call from his mother.
Could be coincidental or gossip though. But a valid reason if true.