I'm not expecting any big free agent moves.
I hope they keep Krebs and Fitzgerald in Rochester to start the season. Its best for both of their long term development. Both Tage and Mitts spent extra time in Rochester after making the Sabres roster, and it benefitted both of them. There is a chance Fitz would get waiver claimed but its a very small chance. Better young defenseman clear waivers all the time.
We lack a bottom 6 center, so get a young one like Nico Sturm. We lack a veteran defenseman and there are several free agent RH options there. This shouldn't be difficult. 9 million bucks, at most, to fill three holes (C, RHD, G).