Jeffrey was traded to the Penguins on Monday along with forward Dan O'Donoghue and blueliner James Melindy. In return, the Coyotes received forward Matia Marcantuoni.
Jeffrey averaged more than a point per game for AHL Springfield this season, ranking 10th in the league in combined goals and assists. This will be his second go-around with Pittsburgh, as the Pens drafted him in the sixth round of the 2007 NHL Entry Draft, only to bounce him between the parent club and minor-league affiliate from 2007-14. Don't be fooled by his success in the minors as Jeffrey's been limited to just 33 points in 131 NHL games between the Pens, Stars and 'Yotes.