Houser was let go from his professional tryout agreement by the Sabres on Tuesday.
Houser will get the starting nod on the road against the Penguins on Tuesday, Lance Lysowski of The Buffalo News reports.
Houser signed a one-year, two-way contract with Buffalo on Saturday, according to PuckPedia.
Houser agreed to terms on a contract with Buffalo on Monday and was subsequently processed through waivers.
Houser was assigned to ECHL Cincinnati on Saturday.
Houser was recalled from AHL Rochester on Friday.
Houser cleared waivers and was sent to AHL Rochester on Thursday.
Houser (COVID-19 protocols) was placed on waivers Wednesday, per Elliotte Friedman of Sportsnet.
Houser entered the NHL's COVID-19 protocols Friday.
Houser turned aside 30 shots in Saturday's 6-3 win over the Flyers.