Are they pushing for a playoff spot? Kreider could just be a veteran replacement for UFA Robby Fabri to better support their youngsters.
On defence they already have, for one more year, Trouba (31) and Gudas (35) on the blueline (2nd and 3rd in TOI last season) ... unless one of them is involved in the (or another) trade I doubt they need Matheson ... unless they are making a BIG push for the playoffs.