Hiding MailChimp App in Admin Navigation

Hello,

I setup the MailChimp App and its working great for my client, but I have a basic user to be added that doesn't need to see or access the MailChimp app, yet the app still displays in their navigation menu despite only having role permissions to: Log In, Upload Assets, and Edit page titles and attributes.

Is there a setting somewhere that I may be missing to hide MailChimp from appearing in the admin navigation?

Thanks, Joshua