A "clueless manager" refers to a person in a leadership position who lacks understanding, knowledge, or awareness of how to manage or make decisions effectively. Full definition
That is how arsenal are playing under an absolutely clueless manager. (justarsenal.com)
Dear me, that said it all for the poor clueless Manager we have been putting up for the last 13 years of failure. (justarsenal.com)
Flamini replaced Le Coq, when he was doing fine, and the first thing his boot touched was Mesi's shin!!!!! and Penalty!!!! what a master stroke by clueless manager. (justarsenal.com)