彼は来ないだろう

he probably won't come

→ 彼
phrase Uncommon #16,720
he probably won't come だろう expresses a guess or expectation. This phrase can also mean "he won't come, I suppose."
JA: 今日は忙しいから、彼は来ないだろう。
EN: He probably won't come because he's busy today.

多分彼は来ないだろう

He probably won't come.

こんな雨の中彼は来ないだろう

He probably won’t come in weather like this.

彼は来ないだろうと思っていた

I thought he probably wouldn’t come.

私の知る限りでは彼は来ないだろう

As far as I know, he probably won’t come.

雨が降れば彼は来ないだろう

If it rains, he probably won't come.