Inverness have confirmed that Grant Munro, Russell Duncan, Stuart Golabek and Roy McBain will leave this summer when their contracts end.
Munro has spent more than a decade with Caley Thistle and departs after making over 300 appearances while Duncan will leave after 10 seasons as a first-team regular.
McBain left the Highlanders for Brechin City in March, with Inverness now confirming his permanent exit.
Inverness chairman George Fraser singled out former captain Munro for special praise.
"Grant has been an exceptionally loyal servant to the club and demonstrates to all in our existing youth set-up that with the correct application, skill and determination you can progress to become captain of the club," he told the club's official website.
"Unfortunately due to the current financial environment generally, but football in particular, contracts are all now short-term one to two-year deals and it is highly unlikely we will see a player with the service profile of Grant at the club again.
"On behalf of everyone at the club we wish Grant well for the future whilst extending our thanks to all the players who have served the club over the seasons through the lows and highs of relegation and promotion."