Makaay was convinced that Barcelona would appoint his compatriot as a coach sooner or later.
"Koeman's dream has always been to coach Barcelona," he told Radio MARCA.
"It doesn't surprise me that a club like this has thought about him because he is a great coach.
"We will see what style of play he imparts.
"He is a coach who likes to play beautifully, but who also wants to win."