Not sure how much I buy Dyche' claim that he only played that way due to personnel available. He could have shaped the squad differently over time if that was the case. I don;t believe he played direct/% football as Burnley couldn;t afford better players. There's a whole world of technical, decent players, if you setup you scouting network accordingly. Why did he stay at Burnley for so long if that was the case, he once lead them into Europe and his stock has been decent for years, so I assume he could have taken a job elsewhere if Burnley financial situation was stifling/holding him back from unleashing his preferred brand of football.
Doubt he'd be interested in a short term deal, to the end of the season. Too much risk for him with little reward, taking a side down. Whereas now he could presumably still get a job at say Everton, Leicester etc.
If we did bring him on, would he fit with the long term ethos of style we want to implement and therefore types of players we sign?
If he is genuine about wanting to play better football, do we want to be his sandbox environment whilst he learns how to do that? As he certainly doesn;t appear to have track record of being able to implement that kind of style.
Dyche thing just seems unlikely for a host of reasons. I'm not seeing many things between us and him that marry up and indicate he's the man for us. But then stranger things have happened in football.