1) After the signature of Taylor Hall by Montreal, Nashville really needs to add offense in their line up, specifically on wings. A player like Tomas Tatar could fit in the 2nd line with Matt Duchene really well. Tatar could help Duchene to be back on track after an average first season. Tatar is free agent after this year, so it's a good guess for them to take if he does the job and maybe resign him before the end of the season.
2) I drop the contract of Byron to Ottawa. They have a lot of cap space and Ottawa needs also a role player like Byron who can always gives good return. I add obviously some pieces to Ottawa for help them to accept the deal. A young prospect B+ in Olofsson (2nd round pick in 2018) and a 3rd round pick. Looks like a fair offer to me if I'm Ottawa.