In a vacuum?
Hall
Hoffman
Rakell
Granlund
In terms of fit? (so cap hit, and likely role)
Granlund
Rakell
Hall
Hoffman
Of that group I think Granlund is the only LHS who isn't going to b***h about not getting prime minutes (especially on the PP), his salary isn't too high, and he'd be an obvious fit on the wing opposite Puljujarvi.
Rakell would instantly become the best RHS on the team. However a bit like the next two, I'm not sure how well he would do in a secondary offensive role, and I don't see Tippett being quick to break up the Nuge-McDavid-Draisaitl PP combo (If you're going after an ANA forward, I'd prefer Silfverberg, who still brings quality defensive play even if he's not scoring)
I think both Hall and Hoffman quasi-fall into the same that trap AA did last year. They're both guys that need primo-offensive minutes to be successful, and I can see both getting frustrated if they're not on the top PP. Basically they're both guys who are beyond useless if they're not scoring (because they're going to start sulking), and this team isn't going to go out of its way to put them in situations to succeed.
Imo the team's skill players are mostly fine. The big need is for a grinder that can succeed in the top 6. This team needs someone more in the Hyman, Boon Jenner, prime-GlenX type mould vs. another skilled perimeter player. Going off
TSN's list, the only names that catch my eye as good fits up front are...
Foligno
Tierney
...
There's not a lot of defensive centres available whom I see as a clear upgrade on Haas and Khaira (and all come with large cap hits, which is money that could be allocated better elsewhere). Plus at this point, I'd rather give McLeod and Benson a well-earned shot. It's the defence where I'd rather spend money and assets on.