Seat post / saddle for Specialized Globe bike

DavidA2016 Posts: 5
edited June 2019 in Workshop
Hi, I have a Specialized Globe road bike. I have bought a new saddle for it:

which has a conventional clamp for a seat post.

The Specialized Globe seat post is splined and the seat attaches with some kind of fitting I haven't seen before, fastened by an Allen screw.

Do you think I could fit the new seat to this kind of post, or would I be better off buying a gel seat cover for the old (Specialized) seat and returning the new one?