St Johnstone chairman Steve Brown says it will take a record fee to take Ali McCann from McDiarmid Park.
The 21-year-old has been a standout for Callum Davidson 's double winners and is inevitably attracting interest from elsewhere.
McCann has been linked with Celtic and clubs down south, but St Johnstone have no intention of letting him go on the cheap.
Brown told Radio Clyde: "There's been a huge amount of interest in Ali.
"He's been consistent over the last two seasons and is going away with Northern Ireland on international duty.
"He's played against Italy in the last international break and he's a class act.
"Our transfer record is £1.75million and Ali will not be leaving for any less than that.
"We don't want players to leave when we have a successful team.
"Selling players is one thing but replacing them is another - it's a huge challenge to get the same calibre of player back in."
The youngster helped St Johnstone to a historic cup double, the first non-Old Firm team since Alex Smith's Aberdeen to achieve that.
