Maddison made his Dons debut as Graeme Shinnie's replacement against Inverness when the stand-in captain suffered a foot injury.
And after feeling his way into the game he showed the undoubted ability which prompted parent club Norwich splash out £3m on him in the January transfer window.
"He played exactly as he'd trained all week," said McInnes.
"He's a lovely technician of the game. He's got quality and confidence. We've got to make sure we can find a place for him in our team, in the right position and against the right teams.
"In games like that, he can be the one who unlocks it. There's a big demand here and that's why we hope he can have a successful loan here and bridge the gap between where he is now and being a regular Norwich player."
Source: Sky Sports