MS SQL Server 2000 ODBC driver for Linux
@Dan, this is by design. SQL Server 2005 is not longer supported. Newly released client drivers support SQL Server 2005+. 

That said, can you try this?

wget https://gallery.technet.microsoft.com/scriptcenter/SQLCMD-and-BCP-for-Ubuntu-c88a28cc/file/142121/1/Ubuntu%2014.04%20MSFT%20ODBC%20Driver.sh
sudo bash Ubuntu\ 14.04\ MSFT\ ODBC\ Driver.sh 
sqlcmd –S yourServerName.database.windows.net – U yourUsername – P yourPassword


These steps install the older version (ODBC Driver v11).