A 50-year-old woman with a BMI of 36 kg/m² and type 2 diabetes is struggling to lose weight with lifestyle advice alone. Her HbA1c is 62 mmol/mol despite metformin and sitagliptin. According to NICE CG189 (Obesity: identification, assessment and management), which pharmacological agent could be considered as an adjunct to lifestyle changes for weight management in this patient?