in an interview for ncis mark harmon said?

“Oh, I'm not going anywhere,''Harmon says.”The show could go on without me, I'm sure. Anything's possible and anyone's replaceable, but I'll be honouring my contract.''Harmon is cagey when asked about the show's future. But he finally concedes:”There's be no official word yet, but I think you can back it in.''what does he means by the last bit"you can back it in"?

Thanks for sharing it!!