Michael Carrick, interim head coach for Manchester United, believes there is "a lot more to do" before judgment can be made on his suitability for the permanent managerial role, despite a flawless record since taking charge.

• Carrick has won all four games since becoming interim manager, moving Manchester United into the Premier League's top four.
• He will lead the team for the rest of the season and faces West Ham on Tuesday, with a chance to move to third in the table.
• United captain Bruno Fernandes has praised Carrick's leadership, and the manager has revamped the team's formation by reintroducing Kobbie Mainoo and pushing Fernandes into a more advanced role.