Big Big Big Problem-LAwyer mistake

gcForV

Registered Users (C)
My Co worker a Canadian citizen was applying for GC under EB2.
Our company's lawyer screwed up and applied his labor under EB4.
This is big big big problem as his TN visa from canada cannot be renewed as its given on a non-immigration intent and he cannot apply for green card this next month as he has to restart the whole process(labor) again.
Can he apply for PERM using the old advertisement?
What are his options?
Any help would be much appreciated.
 
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