Foo (lower body) was sent to AHL Henderson on Monday, per CapFriendly.
Foo (lower body) sustained an injury during the offseason and is not available at the start of the Golden Knights' training camp, Ben Gotz of the Las Vegas Review-Journal reports.
Foo signed a one-year, $750,000 contract with the Golden Knights on Thursday.
Foo has signed a contract with HC Kunlun Red Star of the KHL, Elliotte Friedman of Sportsnet reports.
The Flames recalled Foo and nine other players from AHL Stockton on Wednesday.
The Flames released Foo from training camp and assigned him to AHL Stockton on Tuesday.