Sentence:  Next season will, as ever, be a different matter, another problem for Conte to solve as he looks to extend his personal record of four straight league titles in club football across England and Italy. Given his hunger for more – more time, more detail, more work – only the brave or the <WSD>foolish</WSD> would bet against him. 
Meaning of the word marked with <WSD> tags:  Lacking good sense or judgement; unwise.