Leier (undisclosed) signed a one-year contract with Rochester of the AHL for the 2019-20 season, Jason Wolf of The Buffalo News reports.
The Flyers traded Leier to the Sabres in exchange for Justin Bailey on Thursday.
Leier was designated for waivers by the Flyers on Monday, Renaud Lavoie of TVA Sports reports.
Leier applied for salary arbitration Thursday, according to NHLPA.com.
Leier was extended a qualifying offer from the Flyers on Monday, Sam Carchidi of The Philadelphia Inquirer reports.
Leier is likely to draw into the lineup Thursday evening against the Hurricanes, Adam Kimelman of NHL.com reports.
Leier (upper body) will man the fourth line Saturday against the Blue Jackets, Sam Carchidi of The Philadelphia Inquirer reports.
Leier (upper body) will not dress for Saturday's game against the Blue Jackets, Bill Meltzer of NHL.com reports.
Coach Ron Hextall did not provide an update on Leier's (upper body) status heading into Friday's clash with Buffalo, Dave Issac of the Courier Post reports.
Leier was scratched late from Wednesday's lineup against the Red Wings due to an upper-body ailment.