해석 한문장이요~

when a company comes out with a new product, its competitors typically go on the defensive , doing whatever they can to reduce the odds that the offering will eat into their sales.

여기서 밑줄친 that 절이 관계대명사절인 것 같은데 문장 성분 중 중에 빠진 것이 무엇인가요?