Persson was a 2006 first-round draft pick. He was taken 24th overall, four spots ahead of Nick Foligno, who is the brother of current Sabre Marcus.
Morrisonn was signed by the Sabres in 2010-11. He was sent to Rochester, though, after the Sabres signed Christian Ehrhoff and traded for Robyn Regehr. The move was made to keep Morrisonn's more than $2 million cap hit off the Sabres' total cap number, which is considered somewhat of a loop hole in the Collective Bargaining Agreement.
Morrisonn played 65 games and scored 15 points for the Amerks last season. Persson scored seven in 39 games.