Soliai, 26, recently fired former agent Leo Goeas over a financial disagreement. Soliai's is signed through 2010 when he is scheduled to make $550,000.
"Paul knows he's now got a local team of people that are behind him 100 percent and will do everything we can to help him with every aspect of career," Canter said, "And that could translate directly to better performance on the football field."
Canter said he and his new client are aware the Dolphins will be looking for a nose tackle in the coming NFL draft. But that isn't their concern or focus.
"The focus is getting Paul playing like the dominant player he's shown he can be at times," Canter said. " ... Everything after that will take care of itself."
Canter also represents cornerback Sean Smith and believes the second-year corner is taking the necessary steps for a good second season.
"He's so focused right now he turned down some off-field [offers] that would have taken literally five minutes of his time," Canter said.