His backing comes, despite Scotland boss Craig Levein claiming the 22-year-old is not ready to start every game for his side.
Rhodes scored on his full Scotland debut, in a friendly win against Australia back in August but has since seen his international opportunities limited to substitute appearances in the World Cup qualifying campaign.
Kean told BBC Sport: "When he gets the opportunity to play for the national team, I think he'll score.
"He'll impress and it's just about waiting for your opportunity and I'm sure that'll come."
But the Blackburn boss refused to be drawn on discussing Levein’s personal opinion of Rhodes, insisting that national team selection was not his realm.
He continued: "That's not my decision. If any of the staff from the Scotland camp call me and ask me how he's done, I'll give an honest opinion.
"That's going to be Craig's decision, but I think what you get with Jordan is an intelligence and a natural goalscorer and you can't get too many of them.
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"I think for Jordan it's about coming to a new club first and foremost, fitting into a club environment and he's done that. He's scoring goals very quickly."
Rhodes himself remained grounded about his international prospects and claimed to be delighted with just spending time around his international team-mates.
"It was only 18 months ago that I was given my Under-21 debut by Billy Stark and I'm still eligible to play for the 21s now," the striker said.
"I just see being part of Craig Levein's senior side as a massive bonus and something I would never have expected at this stage of my career, or any stage of my career to be honest.
"It's just fantastic to be a part of things and be around the players."
The youngster continued to stress that he was happy enough to learn from his more illustrious colleagues and stated he will be supporting the team, whether he was included or not.
"Every time I go away with the squad, I try to learn as much as I can with the likes of Kenny Miller and Gary Caldwell and other senior players around the team," Rhodes explained.
"They are great to look up to. It fills me with real pride and it's a huge honour to have fans at Hampden Park sing your name.
"It is something I never thought would happen and something that hasn't sunk in probably either and I don't really know what to make of it.
"But, at the same time, it's still all open and me, like any other Scotland fan, I'll just try to support the team as best I can whether I'm involved or not and hope they go all the way to Brazil."