Myles Turner is the cornerstone of the Indiana Pacers current defense thanks to his rim protection, shot blocking, and all-around defensive ability.
But those are also all reasons why the Pacers trading him could potentially happen. To get something in a trade, you have to offer something of value. If Indiana is looking to upgrade the team in a trade, they have to consider giving up someone like Turner or a 1st round pick, if not more.
There are no current rumors about trading Turner, but Kevin Pritchard indicated that outside of Victor Oladipo, everything was on the table as far trades are concerned.