Originally Posted by
Frontier
Tim has been on record that he's always there for Bruce if he needs him, even if Bruce doesn't want Tim to spend so much of his life trying to be there for Bruce so he pushes Tim away.
I'm not sure if Tim has actually said on-panel if he'd be willing to become Robin again. I feel like Tynion might have written something to that effect, but I can't recall exactly.
I know Tynion prefers him as Robin so he might have had a hand in this.