Well, all I know is that they offer you three times a type rating. If you say to all three offers no, you get the bill of your flight training. That’s why it is so important that you say Lufthansa that you are not available if you are bounded by a contract. If they know you can not accept an type rating, they don’t try to contact you. I know a student pilot of Lufthansa who is working as a ramp agent at the Frankfurt Airport. But he had to accept a contract of one year.
I do not know anything about that you have not to pay anything back if they do not can offer you a cockpit within three years.
RW