Ross McCrorie joins Aberdeen from Rangers

The signing comes amid recent speculation the midfielder was considering a move to Hibernian. Still, manager Derek McInnes said he "couldn't be more pleased" to have McCrorie ultimately join the Dons.

"I've admired Ross for a while but was aware of the challenges we faced to get him," he said.

"I'm thankful we've now got the chance to work with him.

"I'm looking forward to helping him try to fulfil his potential in an Aberdeen shirt and delighted that he has shown real desire to become our player."

McInnes added McCrorie would go straight into the squad for Thursday's match at St Johnstone.

"We've got a lot of games to play in the coming weeks, we've got games to catch up on as well as our Europa League match," he said.

"We'll have a lot of games in a short space of time and we're still carrying injuries so having as strong a squad as possible is vital for us to fulfil our goals this season.

"Getting Ross in is part of our long-term succession planning and his arrival signals the start of our preparations for next season's transfer business.

"Young Scottish players such as Ross don't become available very often and we've had a lot of success in the past signing such players but for both the long-term and short-term, Ross is a fantastic signing for us."