Varone, along with Riley Barber, were acquired by the Penguins from the Habs on Thursday in a swap for Joseph Blandisi and Jake Lucchini.
Varone penned a one-year, two-way contract with the Habs on Wednesday worth $700,000 at the NHL level.
Varone finished the 2018-19 season with three goals, seven points, 34 shots on net, eight PIM and a minus-2 rating in 47 games.
Varone has no points with a plus-1 rating, four PIM and four shots in the last six games.
Varone has two goals and six points with a plus-5 rating in the last 12 games since returning from the All-Star break.
Varone has a goal in his last three games, giving him two this season.
Varone doesn't have any points and possesses a minus-1 rating in the last six games.
Varone was recalled from AHL Lehigh Valley on Thursday.
The Flyers recalled Varone from AHL Lehigh Valley on Friday.
Varone was waived by Philadelphia on Friday, Renaud Lavoie of TVA Sports reports.