hi bahige,
since the "previous client" in the support article you provided is onedrive for businesss 2013 version, and according to this article
office installed using click-to-run and window installer on same computer isn't supported, it can't coexist with office 2016 (click to run version).
you also can't have two different versions of click-to-run applications on the same computer. for example, you can't have office 2013 and office 2016 applications installed using click-to-run on the same computer. for more information, see "stop, you should wait to install office 2016" error.
given this situation, you can install onedrive for business 2016 separately following the workaround in this kb article:
https://support.microsoft.com/en-us/kb/3098502 .
@javier, currently, the onedrive for business next generation sync client doesn't support sharepoint library syncing, this is still under development, for any updates, please follow our roadmap here:
http://fasttrack.microsoft.com/roadmap (in development section)

regards,
james