Gilbert just said that to make the fans happy...They never attempted to win or sign anyone...So it was pretty obvious. They had cap space saved for a star. It just happened to be Lebron and worked out pretty well. They wanted to slot a star with all the young talent they had. They were initially going to after PG...to pair with Kyrie, but that changed when Lebron became avaliable.
That makes a hell of a lot more sense than some master plan to get Lebron back.
I'm sure they had plans to bring in a young star level FA if they could to continue their rebuild. Then Lebron decided he wanted to come back, which is why they had to pretty much re-make the roster rather than just add a top FA.