Summer signing Lewis Ferguson will report for pre-season training with Aberdeen at Pittodrie on Friday.
The Dons and Hamilton Academical have yet to agree a training compensation package for the 18-year-old midfielder.
It is expected it will go to a tribunal to settle the compensation payment for Accies.
However, Ferguson is a Dons player and will meet up with the rest of the squad when they return from the summer break.
English Premier League outfit Crystal Palace were also interested in Ferguson who broke into the Hamilton first team last season.
Ferguson is the third midfield signing of the summer following the capture of Republic of Ireland international Stephen Gleeson on a two-year contract.
The 29-year-old was a free agent having left Ipswich Town at the end of last season.
Republic of Ireland squad player Chris Forrester, 24, was also secured in a £200,000 transfer from League One Peterborough United this month.
Forrester signed a three-year contract until summer 2021.
Boss Derek McInnes is delighted to have bolstered his midfield.
He said: “Following the news about Lewis and then Chris, I’m excited to see what these players can bring to the club.”
Midfield was a position that needed strengthening during the summer following the loss of key players.
Scotland cap Kenny McLean returned to parent club Norwich having been loaned back to the Dons after signing a deal with the Championship club in January.
Loan midfielders Ryan Christie (Celtic), Greg Stewart (Birmingham) and Chidi Nwakali (Manchester City) all returned to their clubs.
Midfielder-defender Anthony O’Connor has signed for League One Bradford City.
New signing Gleeson made nearly 150 appearances in the Championship for Birmingham and spent the final half of last season with Ipswich in the same division.
Gleeson, 29, played more than 200 times for MK Dons.
McInnes said: “I’m delighted to bring his experience to Aberdeen.
“Stephen’s exactly the type of player we wanted for that role. “He’s got the qualities to be a very good signing, both on and off the pitch and as a club we’ll be able to give him what he demands of himself.”
Aberdeen have targeted Hibs’ out-of-contract midfelder Dylan McGeouch although Rangers, Blackburn, Fulham and Brentford are also chasing the Scotland international.
Dons boss McInnes has admitted he would potentially be open to working with Stewart again.
The midfielder-winger has a year left on his Birmingham deal.
Sources indicate that the Championship side would be willing to let the 28-year-old move on during the summer.
Aberdeen are also keen on securing veteran striker Kenny Miller.
The 38-year-old is a free agent having left Rangers at the end of the season.
Boss McInnes met Miller in Florida this summer and the striker has indicated he could make a decision on his future this week.
Premiership clubs Hibs, St Mirren, Dundee, Motherwell and Livingston are all keen on landing Miller for next season.