Laing, who has already spent time on loan at Notts County this season, is due to join the Scottish Premiership side on a temporary basis, where he will be hoping to receive regular first-team football.
Laing had impressed at Notts County earlier in the campaign, with the League One club keen on returning him to Meadow Lane, but Forest have decided to send him elsewhere.
The central-defender will now be looking to show this class in a new environment, with a move expected to be announced in the next few days.
What's the impact for Forest?
The move can only benefit Forest as it gives one of their youngsters the opportunity to play regular first-team football.
Laing has already proved this campaign that he is ready to play at a senior level and his development will be well served by competitive outings.
His chances of making it into Stuart Pearce's plans look to be limited in the current campaign, but with Jamaal Lascelles moving to Newcastle United in the summer he could easily step into his place next term.
By heading away from Forest, Laing has the chance to play in a relatively unpressurised environment and the move appears to suit all parties involved.