YOU SAID:

Frank says he won't release his valued test-driver, which is probably doing him a favour.

INTO JAPANESE

フランクは、おそらく彼に好意を持っている彼の大切なテストドライバーをリリースしないと言います。

BACK INTO ENGLISH

Frank says he probably won't release his important test driver to have a favor with him.

INTO JAPANESE

フランクは、おそらく彼に好意を持つために彼の重要なテストドライバーを解放しないと言います。

BACK INTO ENGLISH

Frank says he probably won't release his important test driver to have a favor with him.