MONTREAL — Quarterback Jeff Mathews will be out for four-to-six weeks with a foot injury, the Montreal Alouettes announced Tuesday.

Mathews suffered a lisfranc injury, which affects a bone or tendon in the bridge of the foot.

He made his first start for the Alouettes in a 28-18 loss at home to the Ottawa Redblacks on July 6 after coming on in relief of Drew Willy in a 23-17 win in Regina on June 30.

Willy is expected to return from a neck and shoulder injury when the Alouettes visit the Calgary Stampeders on Saturday.

The Alouettes (1-3), who are coming off a bye week, also added Canadian offensive tackle Tyler Johnstone to their roster. The six-foot-six 275-pound Johnstone was taken in the CFL supplemental draft on July 2.

They released American offensive lineman Xavier Fulton and kicker Austin Renkow.