I apologize if this has already been explained, but I don't see how it would prevent them from playing golf with the team.
Naturally it's all optics/PR stuff. There is always the chance that Krug and/or Smith don't wind up playing with the Bruins - unless they get signed. Look at it from the players' perspective:
Krug: Got a contract for me?
Chia: $850.5K.
Krug: ORLY? Try $4.5M.
Chia: Where do I get that? Are you aware that there's a cap, and we're still paying Iggy?
Krug: Not my problem. You know what the fair market price is, and you know it's well north of the qualifying offer.
Chia: I'm working on trades - I'll get back to you when I've got something. If I hold out, I think I can get a better deal on moving my D, which means a better team for you to play with. Because it's the Cup. (TM, R)
Krug: I get it. That's how this works. Let me know when you can make a bona fide offer.
Chia: Oh, you golfin' with us?
Krug: Uh....
Chia: It's for kids.
Krug: There are kids in Russia. Plus, I have to hit the rink now. I'm working ten times as hard, because instead of our usual practice facilities *cough* CRAP *cough*, I'm in CT, and instead of having a team of NHL/AHL players to drill and scrimmage with, I've just got one - Smith.