The phrase "old fool" refers to someone who is older and not very wise or intelligent. It is a way to describe someone who makes silly or foolish decisions despite their age and experience.
Sentences with «old fool»
Because he is a stupid old fool who is making the worst managerial decisions in the PL at the minute. (justarsenal.com)
Because he's turned into a stubborn old fool. (justarsenal.com)
No player in his right mind would ever sign for the deluded old fool managing our team. (justarsenal.com)