Switch from a local Office to Office 365 ProPlus

Hi all,

I'm in a discussion with a client about a switch from a local office to office 365.

So if the client want to use office 365 on a rdsserver they need office 365 with a ProPlus plan.

The client is telling met the following:

1. They need to reinstall office again on theyre own rdsserver (Clear).
2. A connection is needed with ProPlus so there needs to be an extra server installed for this connection (not clear).

Is the secondone true? Why does the client needs a new server for a ProPlus connection?

Thanks in advance,

Fabian