Klimchuk was traded to Ottawa in exchange for forward Gabriel Gagne on Friday.
Klimchuk was waived by the Flames on Wednesday, TSN reports.
Klimchuk was tendered by the Flames on Monday, Kristen Anderson of Postmedia reports.
Klimchuk is in line to make his NHL debut Monday against the Bruins, Pat Steinberg of Sportsnet 960 reports.
Klimchuk was recalled from AHL Stockton on Saturday.
Morgan Klimchuk stood out in the Flames' development camp scrimmage on Wednesday.
Klimchuk has a busy summer ahead of him as he's been invited to Canada's world junior camp too. "It's been one of my goals since I was a little kid to play for that national junior team. That's probably one of the hardest Team Canada teams to make," Klimchuk said. "To get an opportunity just to go to camp will be beneficial to me when I come to the Flames camp and my own junior camp." He had 30 goals and 74 points in 57 WHL games in 2013-14.
Morgan Klimchuk is hoping to make a good impression on Calgary's brass at the team's development camp this weekend.
"I'm really excited for it," he said. "Whenever you get a chance to make an impression on anyone in the organization - especially all the new faces - it's an opportunity. Going into camp, that's what I'm looking to do - make an impression. You can't make the team out of development camp, but you can definitely show what you can do." He racked up 30 goals and 74 points in 57 games with the WHL's Regina Pats this past season. Calgary's first-round pick (28th overall) in 2013 also skated in four games with AHL Abbotsford, but he didn't get a point.
Morgan Klimchuk season with the WHL Regina Pats is over.
Klimchuk scored 30 goals and 74 points in 57 WHL games this season. He added another three goals and five points in four playoff contests. With Regina eliminated, the Calgary Flames prospect has been sent to AHL Abbotsford.
Morgan Klimchuk inked a three-year, entry-level contract with the Calgary Flames.
Calgary took Klimchuk with the 28th overall pick in the 2013 NHL Entry Draft. "I'm very excited," Klimchuk said. "For the Flames to put this faith in me, and actually put the pen to paper and get this over with, I'm truly honored and thankful for the opportunity." He has 12 goals and 29 points in 26 WHL games this season.
The Calgary Flames have sent first round pick Morgan Klimchuk back to Regina of the WHL.
Klimchuk was selected 28th overall and was the Flames third pick of the first round. He had 76 points in 72 games with a weak Regina team in 2012-13. Klimchuk has quick hands and feet, and uses his exceptional speed to pressure opponents off the puck. He's very good on the powerplay and can even be used on the point, as he has a knack of getting hard shots through to the net. He's a bit undersized, but competes hard in the corners. He projects to be a second line player in his NHL career.