、。
Please tell him to send this report out tomorrow.
Literal
Tomorrow, this report [object-を] send-out [so-that-よう] say please-give.
~ようにいう is the indirect command construction: 'tell [someone] that X should be done' or 'tell [someone] to do X.' Literally '[verb in plain form]よう + 言う' — 'say that (they should) X.' The subject of 言う (the listener) and the subject of する (some third party) are different — Japanese leaves both implicit.