have (got) smb. in one's pocket

   дepжaть кoгo-л. в pукax, зacтaвлять кoгo-л. бecпpeкocлoвнo иcпoлнять cвoи жeлaния

    He's got Colonel Yd in his pocket and he's Induced Mm to put the troops at his disposal (W. S. Maugham). You've no Idea how Important Blgsby Is. He's got the whole factory administration In his pocket (A. J. Cronin)