Early on Monday morning, the Union announced that they will not activate options on the contracts of Corben Bone, Fred, Brian Brown, Christhian Hernandez, and Conor Casey. Brian Carroll will also walk as his contract has expired.
Corben Bone joined the Union last December, when the club selected him in the first stage of the Re-Entry Draft. He only made two league appearances for the Union, drawing cards in both of them.
Fred, who played for the Union in their inaugural season, re-joined the Union before the start of the 2014 campaign. He saw 343 league minutes for the Union this season, as both Curtin and Hackworth preferred him to younger central attacking midfielders.
Brian Brown came to the Union on loan this summer, but failed to force his way into the team. The Harbour View striker played in eight league games this season, scoring twice.
Cristhian Hernandez signed for the Union as a Homegrown Player in 2012. Since then, he has only seen 26 minutes of MLS play. He's spent most of his time with the Harrisburg City Islanders, where he's been on loan since 2013.
The Union took Conor Casey in the second stage of 2012's Re-entry draft. Since then, Casey has been the team's leading scorer, as he's netted 18 goals in 56 appearances for the Union.
The Columbus Crew traded Brian Carroll to the Union prior to the 2011 Expansion Draft. He has made 120 appearances for the Union, acting as captain in a number of them.