price on somebody’s head
From Longman Dictionary of Contemporary Englishprice on somebody’s headprice on somebody’s headSCCGIVEa reward for catching or killing someone → priceExamples from the Corpusprice on somebody’s head• He was also unusual among philologists in having had a price on his head.• Bream often have the biggest price on their heads but roach, rudd and hefty tench can provide a healthy bonus.