Much ado about nothing. If this is the agent, it's him trying to create some leverage where there wasn't much if any previously. In other words, he's just doing his job. 'Increase your offer or my client goes to Europe and your teams horrid bottom six scoring depth becomes even worse.'
It won't happen but honestly, it might not be the worst thing for Bennett spend to a year in the KHL or wherever. More experience, more responsibility, possibly playing in the olympics, not being saddled with Brouwer's enfeebled corpse, etc. Like Giordano, Bennett could come back with the development that the Flames organization struggles to consistent provide to it's younger players.
My guess is Treliving has a flat two and/or three year deal on the table and isn't budging. Like Gaudreau last year, Bennett will end up caving but entirely unhappily. If it ends up affecting his ability to breakout, he'll probably end up being traded next year. If not and he thrives, he'll remember how the organization treated him when he had little leverage.