Bruce believes McGregor is already comparable to best he has ever worked with as a manager.
"Allan McGregor has proved to me what a fantastic goalkeeper he is. He's as good as anybody," said Bruce.
"In management, he's as good as anyone I've worked with. He's quick and he's brave as lion.
"He's composed, kicks it well, he's a very good goalkeeper. The Premier League is his stage. I'm delighted with him.
"If he was English, I'm sure he would be in the frame to go the World Cup, I'm positive of that."
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