My two bobs worth.
Dimma is on record as saying that he will always support his players, and has a track record of doing, just that.
Dimma was showing "support" for Dusty (who is/was mourning the loss of his father, hero and best mate) when he gave his blessing should he choose to leave.
Who's to say.....Dusty might be more inclined to stay, because of the "support" Dimma showed him.
Dimma was asked about Dusty's future, and the talk that he might finish his career somewhere else. Dimma answered by saying that Dusty would have his blessing should he leave.
I'm not hung up about whether Dusty leaves or not. I would love for him to finish his career at Tigerland though.
Dusty would leave with my blessing too, because of the joy he brought me, and all us Tiger fans, something that I didn't think I would ever see after all the years of heartbreak.
What's most important to me is, is what's best for Dusty and his wellbeing.