Son Heung-min was withdrawn in the first half of Tottenham's crucial Champions League encounter away at Marseille.
The South Korean was forced off after appearing unsteady having taken a blow to the head from Chancel Mbemba.
Tottenham's first half misery was compounded by a goal from Mbemba deep into time added on largely because of Son's injury.
Son Heung-min was withdrawn during the first half after taking a blow to the head against Marseille
Reacting Son going off, supporters expressed their concern for the South Korean while also expressing displeasure at Antonio Conte's choice of replacement.