With the Bruins' salary cap space being tight, the team wants to make training camp competitive. With the Jeremy Swaman situation complicating things, they could add more players on PTO until Swayman is signed.
If the Bruins were to sign Wheeler, it'd be his second round in Boston and could be an affordable bottom-six option. At 38 years old he played 54 games for the Rangers scoring 21 points( 9 G, 12 A) and is at the end of his NHL career.
Yamamoto is different, at age 25 should be entering his prime and despite his regression in Seattle, could find a fresh start in Boston and become a contributor once again. His career high was 41 points(20 G, 21 A) with the Edmonton Oilers in 2021-2022.