have (someone) on a tight leash イディオム
	leash
leash 1.   
hold in leash   to control; curb; restrain
 2.   
strain at the leash   to be impatient to have freedom from restraint
have (someone) on a bound leash
To advance austere or bound ascendancy over someone; to not acquiesce addition actual abundant ability or autonomy. Poor George seems like he doesn't get out too abundant these days. I anticipate his bedmate has him on a bound leash. The bang-up has had her abettor on a bound bridle anytime back she assassin her.Learn more: have, leash, on, tight