değersiz adam, işe yaramazın teki

listen to the pronunciation of değersiz adam, işe yaramazın teki
التركية - الإنجليزية
bad egg
Someone whose behaviour is reprehensible or irresponsible; a rogue

My son had a drug problem and hired a bad egg as a chief accountant ... .

rotten egg, egg which has spoiled; man with a bad character, mean person
(old-fashioned slang) a bad person