A "caretaker manager" refers to someone who temporarily takes charge of a team or organization until a permanent manager is appointed. They are responsible for overseeing and managing the team during this transitional period. Full definition
Our season is over and sticking him in as caretaker manager until we can recruit properly in the summer doesn't seem too bad an option. (justarsenal.com)
It won't be his team next season, he's history and he is just caretaker manager at present. (justarsenal.com)
They'll be led at Old Trafford today by caretaker manager Darren Moore. (news.ladbrokes.com)