The Coyotes acquired the center and right wing B.J. Crombeen from the Tampa Bay Lightning for a sixth-round pick in the 2015 NHL Draft. Tampa Bay earlier obtained Gagner from the Edmonton Oilers in a trade for right wing Teddy Purcell.
"It's been a roller coaster of emotions," Gagner said, according to The Canadian Press. "I was talking to my agent, and he had said when Tampa [Bay] traded for me that there might be something else going on. So it was something that I was prepared for. I wasn't really expecting to be traded (again) today."