Manchester United and Chelsea are among the frontrunners for Lukaku who has scored 24 goals this season but they will both think twice at paying such a fee.
Everton would prefer to sell Lukaku to United after a nasty transfer war with Chelsea over John Stones two years ago.
Lukaku has already stunned Everton by telling them he will not sign a new contract, just hours before he had been due to put pen to paper on a five-year deal last month. Join the We Are Hooligans team!
He said: "I can never have enough of football".
Kirkbride added the huge asking price is an attempt from Everton to deter potential suitors, as they want to keep Lukaku on their books.
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It's also claimed that Everton have doubts over Jose Mourinho's interest in Lukaku as the United manager has made the signing of Antoine Griezmann from Atletico Madrid his top priority for the summer.
Chelsea need to sign Lukaku with concerns hanging over the head of Diego Costa.
If Everton, fuelled by Lukaku's goals, can pierce the top four next season then even better (the best case scenario).
According to the Sun, the Blues hold the advantage in the transfer race with the Belgium global having told pals that he prefers a return to Stamford Bridge rather than working with Jose Mourinho at Old Trafford.
Meanwhile, John Terry, who is a target for Bournemouth and West Bromwich Albion after announcing he will leave Chelsea at the end of the season, has confirmed he will delay a decision over his next club.