Adam Gotsis already weighs 130 kilos.

But the 24-year-old from Melbourne has been told to bulk up or risk losing his NFL career.

Gotsis, who plays at defensive end, was taken by the Denver Broncos in the 2016 NFL draft at pick 63.

He featured in all 16 of Denver’s matches in the recently completed season but certainly won’t be resting on his laurels after an ultimatum from Broncos defensive line coach Bill Kollar.

Kollar said he has urged Gotsis, who is 195cm tall, to spend his off-season in the gym because his career lies in the balance.

“Physically, I’ve told him all along – ‘You’ve got to bigger and stronger, or else’,” Kollar told the official Denver Broncos website.

“These guys are too big and strong and tough in this league.

“I told him, ‘If I were you, I’d take one week off after the season, I’d [then] get my [backside] into the weight room and I’d lift until there was no tomorrow’.

“Because otherwise, you don’t have a chance.”

Kollar said that the Broncos – Super Bowl champions in 2016 – expected a lot more from Gotsis than he had shown so far.

“[He] wasn’t as far along as we hoped he would be,” he added.

“You’ve got to be able to get in there and right. Right now, where he was physically, he wasn’t where he needed to be.”

Gotsis made five solo tackles and nine assisted tackles in his debut season as the Broncos, who won nine of 16 matches, failed to make the post-season.

He is clearly taking Kollar’s advice, as a recent post on Instagram showed.

https://www.instagram.com/p/BPbYvm4DQkW/?taken-by=adamgotsis

And maybe he’ll need to eat a few more of these.

Had a taste of home today! Head over to The Great Australian Bite in Aurora to try some good Aussie food! pic.twitter.com/3sdlDMjSsd

— Adam Gotsis (@gotsis96) June 20, 2016

Gotsis ‘was the talk of the town’

When Gotsis joined the Denver Broncos, they were delighted.

The former Kew High School student was taken in the second round of the NFL draft – no Australian has been taken higher in the competition’s history.

And he would have been gone even higher in the draft had he not suffered a serious knee injury in the build-up.

Denver legend John Elway – quarterback for the franchise in two Super Bowl wins – is a key member of their backroom staff now.

And when they drafted Gotsis, he said: “We’re really excited about him.

“He’s a guy we think has a really high ceiling. He was a guy we targeted so we didn’t want to take any chances to let him slide [in the draft].”

Denver coach Gary Kubiak said that Kollar was integral in the club taking Gotsis, and that they did so on his recommendation.

NFL draft expert Mel Kiper hailed the capture of Gotsis and said he was wanted by many clubs before the Broncos pounced.

“This kid, I tell ya, he was the talk of the town,” he told ESPN.

“He was one of those fast risers that everybody in the league mentioned.

“[They were] all hoping they could maybe steal him in the third round. And Denver grabbed him prior to that.”