BLAKE'S IN KELLY'S CORNER!

Pulls away from her hated ex’s management

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FUMING Kelly Clarkson isn’t done playing hardball with estranged hubby Brandon Blackstock, sources said — after dumping him as her manager, she’s convinced close pal Blake Shelton to do the same!

Insiders exclusively told The National ENQUIRER that Blake, who’s been Brandon’s client since 2010, is actively seeking new management in the wake of Kelly’s bitter bust-up!

“Blake is still technically represented by Brandon and his father Narvel’s firm, Starstruck Entertainment,” a source spilled. “But he has one foot out the door — and that’s because of Kelly. He’s looking for new representation.”