Crewe boss Gudjon Thordarson is keen to appoint his own backroom staff following Alex's relegation to League Two.
Former Port Vale manager Foyle still has a home in Staffordshire and has been linked with replacing current number two Neil Baker at Gresty Road.
However, McGill told the York Evening Press: "I am unaware of Martin applying for the assistant manager's job at Crewe.
"Having known him now for a little while, I would have said he is not the type to apply for a job without first informing me."
Source: Team_Talk