Collingwood midfielder Nathan Freeman is set to join the Saints in a deal for St Kilda's second round pick next year.

The deal which is expected to go through Monday afternoon or Tuesday morning at the latest, will also involve an exchange of later draft picks.

Nathan Freeman has turned his back on the Pies. Credit:Getty Images

The Freeman trade allows the Saints to concentrate on acquiring Essendon key position player Jake Carlisle, a negotiation that has proved difficult.

The 20-year-old Freeman who was taken at pick 10 in the 2013 draft did not play a senior game with that Magpies as he was plagued by hamstring injuries.