Weird all around.
"Look, we couldn't find anyone else, so do you want to stay after all?"
Weird that he agrees to it. Because I think Tuchel is definitely the kind of guy to hold grudges. But maybe Eberl went with the "I didn't have anything to do with your sacking" approach, but that they still went for other managers and got rejection after rejection still must feel like Tuchel is their last desperate choice.