Australia and New Zealand will host the event with the final to be played at the MCG on March 29, 2015.
Hussey says the Aussies should give the 19-year-old spinner an extended run in the one-day side this summer.
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"We've got to get games into these guys. Agar needs to be playing as much cricket as he possibly can," 2007 World Cup winner Hussey told reporters.
"I only played (with Agar) last year when he played his first few games for Western Australia and he did a fantastic job in one-day cricket.
"He's got the skill to be able to do it because he can come on and keep it tight when he has to, but he's also got the skill when the conditions are right to be able to attack and try to take wickets as well.
"He's definitely someone we should be looking to for the future."
Agar has taken only two wickets in his two-Test career, having made a shock debut at the start of the Ashes series on July 10 at Trent Bridge. His one-day record for WA is a handy five wickets at 18.80 in two matches.
Australia won the 1987, 1999, 2003 and 2007 World Cups but were knocked out in the quarter-finals in 2011 by eventual winners India in India.
"We need to identify pretty quickly who we think are going to be the players who can take Australia to World Cup glory," Hussey said.
"We've got to show faith in those guys and really believe in them and get some good games under their belt and try to formulate a solid game plan that can be competitive on the world stage.
"We've got time and I think we can do it."