Millsap is not a stretch 4. He shoots 26% from 3 in the playoffs, including 17% this year and has got worse every year the last 4 years from an already bad 3 point percentage in the playoffs. But he is a good player.
Serge Ibaka but I think he will cost more than we can begin to offer.
Although I guess too expensive should be said for every FA. We would have to trade for someone, not sign them in Free agency since we have no room to do that.
JaMychal Green?
Pattrick Patterson
Markeif Morris
Marvin Williams
Meyers Leonard
Nikola Mirotic
James Johnson
Aaron Gordon
Derrick Williams (shot well in this years playoffs in garbage time)
Some of those might be stretching it on the defense part but there is somewhat of a list.