Have to imagine Whitten is retiring soon (this news makes me pretty confident it'll be the end of this season). Devoto just can't be counted on given his injury record and while it sounds harsh, I hope we offload him fairly soon as he really is just taking up cap space at this point. O'Loughlin isn't a 12, and Hawkins would be a huge upgrade upon the likes of Hendrickson.
I've been very impressed by Kata so far, but there are undeniably aspects to his game that are lacking. He's good, but Baxter has always favoured 12s who have strong passing/kicking games over out-and-out power players. Hawkins is exactly that. He's got a huge future ahead of him and I think he'd really thrive in the Chiefs setup. If this rumour is true then it's one I'll be very happy with.