McCormack left Rangers at the end of the 2005/06 season
Ross McCormack says he would be tempted by a move to Celtic but that a switch to the English Premier League would be more difficult to turn down.
The former Rangers and Motherwell player is attracting interest from a number of clubs after finishing the season as Cardiff's top scorer.
He said: "I've got a soft spot for Celtic. I supported them as a kid.
"Ever since I was a kid, I wanted to play in the Premiership. If I get the chance, it'll be hard to turn down."
The 22-year-old, who has three Scotland caps, scored his first international goal against Iceland in April and netted 23 times in his maiden season with Cardiff as they missed out on a play-off place on goal difference.
McCormack 'flattered' by �6m price tag
"I don't think I'm over the disappointment," he told BBC Scotland.
"It's hard being told that you missed out on the play-offs by one goal, especially for me personally - I missed two penalties in the last four games and if I had scored one of them, we would've been in the play-offs.
"Right now, I'm happy where I am at Cardiff and I'm enjoying my football."
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