That, To
Structure
Verb + との + Noun
［い］Adjective + との + Noun
［な］Adjective + (だ) + との + Noun
Noun + (だ) + との + Noun
(A) との (B) is a compound particle constructed from と (indicating a quotation), and の (indicating an attribute of a noun). It shows that the information included in the following noun is that of communication, like 提案、知らせ、意向、意見、依頼、見方、指摘、連絡、報告、見解、理由、こと and the like.