With a packed fixture list and without replacements ready to change the game, Eddie Howe is left trying to limit the damage
Son limped off during their 2-1 loss to West Ham after he took a blow to the back.
Dwight McNeil, Abdoulaye Doucoure and Beto scored for the Toffees.
A 2-1 defeat to West Ham means Spurs have now dropped points from a winning position in five straight games