Tyler Bozak is a 31 year old center. He will turn 32 on March 19 next year. He has played 513 NHL games in his career. His scoring line reads 125-197-322 or .62 ppg. His career face off % is 53.6, but the two most recent years he was over 56%. He has one year remaining on his current contract. He would then become an unrestricted free agent. The cap hit for the remaining year would be $4.2m and the cash would be $4.0m. Over the last 6 1/2 seasons (lock out) he has averaged 73 games per season.
Ryan Murray is a 23 year old left shooting defenseman. He will turn 24 in September, before the season starts. He has played 220 career NHL games. His scoring line is 11-49-60 or .27 ppg. He has primarily been assigned a shut down role and been instrumental in his teams penalty kill. He gets almost no power play time. He has one year remaining on his current contract. He would then become a restricted free agent with arbitration rights. The cap hit and cash required for the remaining year is identical at $2.285m. Over the last 4 seasons Murray has averaged 55 games per season.
Your proposal doesn't say much about what problems this solves for either team or if there is anything else included in the deal. I would be curious to hear from the OP why he/she feels this trade is beneficial before commenting. Anything more you care to share with us?