Sky Sports revealed on Thursday that the 20-year-old was set to spend time training with the Dons ahead of a proposed switch to Pittodrie.
He has now returned to Boro after two days working with Derek McInnes' men.
Ripley hopes he will soon be back in the Dons fold, with the England U20 international eager to get important game time under his belt.
He said in the Daily Record: "Hopefully I can get this loan move up and running and can play for Aberdeen, who are a big club with a big history.
"I'm going home for a week but hopefully I will be back up again. I want to be here for the rest of the season."
McInnes is looking to bring further fresh faces into his squad, but is delighted to have already tied up deals for Barry Robson, Gregg Wylde, Willo Flood and Calvin Zola.
He said: "We have brought players to the team to try to bring in competition.
"I know pre-season is about fitness but it is also important for the players to try to grab an opportunity."