Interesting. Little bit of fan fiction here, but I think all the pieces fit:
So last offseason, a rumored trade between the Islanders and Toronto swapping Hamonic for JVR+ is rescinded when JVR won't agree to an extension. Patches goes into the draft with Pat Brisson as his agent. Brisson, who as JT's agent has spent the past month heavily involved with the Islanders front office. Discussions happen pre-draft, and Patches agrees to an extension, homeboy's from Connecticut after all one ferry ride away from where they grew up.
For the Islanders - we expect one top player to be there at 11, not so sure about 12. Lou's probably not that high on guys like Hayton or Kravtsov, but Montreal licks their chops to get another high-end center prospect. So a deal is reached - 12th overall for a extended Patches, but Lou's gonna wait to see how the draft board goes.
1st - The Hayton pick pushes a lot of top guys down the board, so while Buffalo couldn't get #3 for ROR, they start talking about the possibility of pairing one Wahlstrom, Dobson, Bouchard with Dahlin and if that would be an acceptable return for ROR. Montreal offers more (hence all the talk between Botterill and Bergevin on the draft floor) with Montreal offering the 12th overall for ROR and Buffalo gradually growing more interested.
2nd - Rangers pick Kravtsov, and eventually Islanders scouts start to panic as they realize Edmonton and their RHD-hungry squad will certainly take whichever of Bouchard and Dobson they prefer. So trades off, no Patches to NYI, no ROR to Buffalo. Patches isn't happy, as he was under the impression he'd get traded to the Islanders, so once again Bergevin tries to shop him elsewhere, and ends up with the Kings offer. Which Bergevin likes, but Brisson can't get Kings management to pony up the same term and/or AAV that the Isles were offering him. Whatever was being offered was unacceptable, and having got jerked in the wind twice on the same day, promptly fires Brisson, knowing Walsh would happily represent him with one phone call.