The Lurgan Blues wrapped up a spot in the European play-offs on Saturday with a 1-1 draw with Dungannon Swifts.
And followed up that result with confirmation of the capture of three former Linfield players.
Andy Waterworth, Mark Stafford and Mark Haughey make the switch to Mourneview Park having won a league-and-cup double with the Blues.
Glenavon boss Gary Hamilton described the work as “massive news for the football club” on the club’s official website.
He added: “For a club of our stature to bring in three players who gave achieved so much over the last five years is incredible.
“I hope that these players can take us to the next level.
“I don’t think we are that far away from being a top-six side and I think bringing in three born leaders and born winners will help everyone at the football club.”
Waterworth scored 190 goals for Linfield, with Haughey signing for the Blues from Glenavon in 2013 and Stafford moving on after six years at Windsor Park.
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