If we could get Favors I would definitely go for it. I think there were rumors that the Jazz were trying to trade him last summer. Not sure if there's any substance behind that though.
I think it would make sense for the Jazz to try to sign Millsap and if he does sign, start him and Gobert and have Favors back up both of them, with an occasional lineup with all 3 of them. However if the Jazz rush to move Favors I would jump at that chance.