The club's goalkeeping coach would have become the oldest player to ever appear in the Football League had he come on, beating a record set by Neil McBain who appeared as a 51-year-old for New Brighton against Hartlepool in 1947.
Westley said: "He's been absolutely brilliant on the training ground. He's fit and in good shape and at 55 the whole squad feel that as back-up he is someone they can trust and an option on the bench.
"Had he been used I have no doubt he would have done exceptionally well."
For the big stories and the banter follow us on Twitter: @tribalfootball