Tynan, 27, led the AHL with 59 assists and tied for third with 71 points in 71 games with the Chicago Wolves in 2018-19. He added two goals and 11 assists in 22 postseason games as the Wolves reached the Calder Cup Finals.
A two-time AHL All-Star (2016, 2018), Tynan has skated in 367 regular-season games in the AHL with Chicago, Lake Erie/Cleveland and Springfield, totaling 58 goals and 208 assists for 266 points.
Tynan has also registered three goals and 18 assists in 42 postseason games, winning a Calder Cup with Lake Erie in 2016.
A third-round choice by Columbus in the 2011 NHL Draft, Tynan has skated in three career NHL games, all with the Blue Jackets.
Megna, 29, scored 20 goals and added 23 assists for 43 points in 71 AHL games with the Hershey Bears in 2018-19. He posted four goals and four assists in nine playoff contests as well.
Entering his eighth pro season, Megna has skated in 312 AHL games with Hershey, Utica, Hartford and Wilkes-Barre/Scranton, registering 80 goals and 89 assists for 169 points.
Megna has also appeared in 113 NHL games with Vancouver, the New York Rangers and Pittsburgh, collecting 10 goals and 10 assists for 20 points.
Renouf, 25, has won two Calder Cup championships in his first three pro seasons. In 2018-19, he tallied two goals and 22 assists for 24 points in 74 regular-season games with the Charlotte Checkers before adding one goal and two assists in 12 postseason contests.
Renouf has skated in 220 regular-season AHL games with Charlotte and Grand Rapids, notching seven goals and 46 assists for 53 points along with a plus-29 rating and 304 penalty minutes. Renouf also won a title with the Griffins in 2017.