Big Sam was axed by then-chairman Owen Oyston, who was in prison at the time, in 1996 after two years in charge.
Since then, Allardyce - now boss at Blackburn - has been determined to prove the Seasiders were wrong to axe him after their best season in 18 years.
And that could spell bad news for Ian Holloway's Tangerines.
Allardyce said: "When it happened it was a bewilderment, I didn't know how to deal with it or cope with it.
"I probably could have stayed in the businesses I had at the time.
"But I had a burning desire to show I could be a good manager. It taught me to be more ruthless and prove people wrong."