Ibrahimovic completed a return to the San Siro on a free transfer last weekend, having spent the last two seasons with LA Galaxy in Major League Soccer.
The Swede's deal with Milan is only a short one, but Raiola wanted his client to end his career back in Europe.
"Zlatan is back to have fun and entertain the world," he told La Repubblica.
"I couldn't allow his last stage to be in Los Angeles. These six months will be like the last tour of Queen, a long tribute: it had to be done at San Siro.
"Who convinced who? We argued over every transfer. If I was ignorant, I would think it was always me who decided his teams.
"Instead at 52, I understand that he decides and then he makes me feel as if I made the decision."