The England Under-21 winger has scored four goals in the Seasiders' four opening games, and has caught the eye of a number of Premier League clubs.
But Holloway insists he will not allow his prized asset to leave on the cheap, suggesting a fee of £15 million may be required.
The Blackpool manager wrote in his Sunday Mirror column: "I'm not going to say how much interested clubs will have to come up with if they are to prise one of my best players away.
"But I did note that Liverpool have just paid £15m to Swansea for 22-year-old Joe Allen.
"Blackpool won&'t allow bigger clubs to take liberties with us. Incey is Premier League quality alright."