Jason Norsic, the team's head coach, announced his resignation on July 22, 2013, citing personal and family obligations..[4] Doug Montroy was named as his replacement. On January 11, 2014, the team "parted ways" with Montroy and assistant coach Ed Rulo was named interim head coach for the remainder of the 2013–14 season.[5]
In April 2014, The Field Sports Complex acquired all properties related to Illinois Piasa.[6] The club will be an affiliate of St. Louis FC.
TFSC announced the rebranding of the club as FC Adrenaline[7] in August 2014. The club will compete in the Premier Arena Soccer League during the 2014–15 season.[needs update]
The club's original name comes from the mythical Piasa Bird, a Native American legend from the Alton, Illinois, area just outside St. Louis. The legend says there is a giant bird that lives in the caves of the Mississippi River bluffs near Alton that kidnaps people, then proceeds to devour them in his lair.[citation needed]