moving from multisite to single site WP config

I have a potential new client who is having problems with their current webmaster. They have asked me if I would take over the running of the site and then redevelop it. fyi.. I would be using the wpmudev market press and events mgt plugins for the new design.
However, the current website is managed under a multi site wordpress installation. I would like to back up the files and database and move to a new server where I can then manage it. I have moved sites before like this but never one that is managed with a multi-site installation...are there any particular differences I should be aware of when transferring such a site to a new dedicated wordpress configuration??? thanks...John