Ex-Birmingham City and Aston Villa boss McLeish coached Miller at 'Gers, Hibernian and at international level so is well-versed to know what the veteran would be capable of in the Scottish Championship if he headed back to Glasgow.
"I definitely think Kenny can still do a good job here," said McLeish. "He is a fit guy, a good professional and he looks after himself.
"When your legs go as a player, they go. Sometimes the last person to see that is the player himself. But Kenny has still been playing to a good level in the Major Soccer League with Vancouver."
Miller joined Vancouver from Cardiff City in July 2012 and went onto score 13 goals in 45 appearances for the Whitecaps.
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