PS4 game backups

[Slowdive]

I think my google fu has failed as I have not found a straight answer. I also dont have a free HD laying around to test this. However is it possible to backup a PS4 game? As in I downloaded 60gb of data now I want to free up space but not have to re-download an entire game later.
Is it possible to back it up locally and then add it back to main HD in future? As I notice I am filling my HD rather quickly, obviously stuff on disk is not an issue. However some games are huge and it would effect my choice of buying digital vs disk that's for sure.

Thanks for taking the time to answer.

[BeoTeK]

No, can only backup the entire disk and all content as far as I'm aware.

[Slowdive]

Thanks, thats a pity and certainly makes a huge argument for disks. I like having a library and even if I dont play something for months, I like to know I could.
Downloading 60 gig over my slow line is not instant gratification