In just three days after his return as gaffer, he has made his first signing in the names of Éder Militão from FC Porto.
Real Madrid sacked Santiago Solari and replaced him with Zinedine Zidane, the club confirmed on Monday.
Zidane, 46, signed a three-year contract that will keep the former Los Blancos star at the Bernabeu until June 30, 2022. He took over at the club immediately.
Éder is a 21 year old Brazilian central defender who has been signed by Madrid at a fee of €50 million (£43m/$57m) on a six-year contract.
Real Madrid have confirmed this on their website.