Per the Montreal Impact here are the injury updates they posted on their site.
Impact statement:
Biello also provided a health update on defender Hassoun Camara, who left Friday’s game midway through the first half after he sustained a head injury. Camara did not train on Tuesday, as he is currently following the MLS concussion protocol. But Biello hopes that Camara could be available for this Saturday’s game against Atlanta United FC, should his concussion symptoms disappear entirely.
The Montreal head coach is also optimistic that Nacho Piatti could return after missing the last two games due to a lower-body injury.