In Agile, it's important to maintain focus on the current sprint's goals and scope. Since the sprint deadline is approaching, adding additional features may compromise the team's ability to deliver the planned work on time. The best approach is to explain to the client that the new features can be considered for the next sprint, ensuring that the team can finish the current work and deliver value on time. This also allows the team to properly plan for the new features in the next iteration without overloading the current sprint.