Really have never been one to say "never", but those interested in Springer need to understand you might as well try to pry Trout away from the Angels.
Freddie "might" get him. Noah Syndergaard "might" get him. A package of Inciarte and Julio won't.
Springer's 2015 season was scrubbed by injury - he breaks out this year, and has as much upside as anyone out there (and the Astros' brass knows it) IMO.
That said, if FF, Teheran, and Inciarte nets you Springer, A. J. Reed, and Daz Cameron, I'd pull the trigger in a heartbeat.