Notts have sorely missed the former Sheffield Wednesday defender, who had been in good form of late before his injury.
"Kevin's not ready yet but he's improving.'' said Head Coach Gary Brazil
"It looks like it will be a case of whoever is fit will get changed on Saturday. It will be a tough game because Blackpool are a decent side.'' added Brazil.
If Nicholson fails to make the trip to Bloomfield Road, there is an outside chance he could face Bristol City on Tuesday.