Crouse, in a post on his verified Twitter feed, thanked the Panthers for the opportunity he got at training camp and expressed his excitement to be returning to the Kingston Frontenacs of the Ontario Hockey League.
The 6-foot-4, 210-pound left wing had one assist in three preseason games.
The Edmonton Oilers assigned forward Leon Draisaitl, the third pick in the 2014 NHL Draft, to Bakersfield of the American Hockey League on Monday to finalize their 23-man NHL roster for the start of the 2015-16 season.
Draisaitl, who turns 20 on Oct. 27, had a goal and three assists in six preseason games, and was under consideration to begin the regular season in Edmonton with forward Jordan Eberle out 4-6 weeks because of a shoulder injury.
General manager Peter Chiarelli told the Oilers website he wants Draisaitl to work on his 200-foot game and said he will predominantly play center at Bakersfield.
MacDonald, who signed a six-year contract with the Flyers on April 15, 2014, had two goals and 12 points in 58 games last season. He is owed $23.75 million on the remaining five years of the contract, according to war-on-ice.com.
The Flyers, who open the regular season Thursday at the Tampa Bay Lightning, brought eight defensemen on one-way contracts to training camp.
Roy, 32, was in camp on a professional tryout contract. He had 12 goals and 32 points in 72 games last season for the Edmonton Oilers and Nashville Predators, and was an intriguing possibility to make the Capitals with center Nicklas Backstrom missing the start of the season recovering from offseason hip surgery.
Peters, 29, went 3-6-1 with a 3.25 goals-against average and .881 save percentage in 12 games last season as the backup to Braden Holtby, but was pushed for the job by Philipp Grubauer, who wound up starting Game 2 of the Eastern Conference First Round against the New York Islanders when Holtby was ill.
Hamilton, 23, had one goal in 17 games for the Avalanche last season and two goals and two assists in five games for Lake Erie in the American Hockey League after being traded by the San Jose Sharks for defenseman Karl Stollery on March 2.
"He had an excellent camp and opened a lot of eyes ... but his body needs to get stronger," coach Dave Tippett said in comments tweeted by the Coyotes. "He understands that."
Strome, the third pick in the 2015 NHL Draft, won the OHL scoring title last season with 126 points (45 goals, 84 points) in 68 games. He had 10 goals and 22 points in 20 playoff games to lead Erie to the OHL Final, where it lost to Oshawa.