Parkes has nothing but pride for what his former players have done.
He told the Lancashire Telegraph: "In terms of football these days, Blackpool are a very, very small club. Their facilities are lacking, a lot of the staff are still part time and everything about them points to the Premier League being the totally wrong league for them to be in.
"That makes what they have done an even bigger achievement though. It is incredible and almost baffling when you consider how far they have come. It was only three years ago they were in League One.
"I don't think I am exaggerating when I say them getting promoted into the Premier League is the biggest and most unlikely story ever in the history of the league.
"It is a story that I don't think will ever be emulated by anyone and if they stay up, well it could be the biggest story in the history of football. I don't think anyone realises quite what an achievement it has been for the club."