Carrick secures Champions League - what are Man Utd waiting for?

Michael Carrick has secured Champions League qualification for Manchester United as interim manager, prompting calls for him to be given the job permanently. BBC Sport's Simon Stone argues that unless United appoint Luis Enrique, Carrick is the most acceptable candidate for the permanent role. The article raises questions about why United are hesitating to commit to Carrick following his successful stint in charge.