Just completely spitting balling her, but could they be try ok kill three birds with one stone, the NHL buys the team of AM with the promise an NHL team will return if a suitable arena is in place and facilitates the sale and relocation. The suns owner agrees to renos at TS and purchases the team at a reduced price.... SLC gets it's team, The suns owner eliminates arena competition for the price of arena reno's and a token fee. and the NHL gets free of AM.
That said I can't see the NHL to give reason for locations to argue for a lower expansion fee because they got it. Also not sure how much eliminating a potential competitive threat from the proposed arena would be worth to the suns. But it was a thought that rattled around my puny puny brain.