PORT Adelaide draftee Jarman Impey is raising eyebrows, with Power vice-captain Brad Ebert the latest to talk up the 18-year-old speedster.

Impey was taken by the Power with its first selection in the 2013 NAB AFL Draft at pick No. 21 overall.

The 177-centimetre, solidly built teenager has flourished in his first AFL pre-season and was seriously impressive at the Power's training camp in Dubai in November.

Impey trained with the rest of the squad early on Tuesday morning to beat the forecast 41-degree maximum.

Jarman Impey has been impressive since joining Port Adelaide for 2014, make sure you join to. Visit weareportadelaide.com.au or call 1300 467 232 to secure your 11-game reserved seat or Essential Power membership and guarantee your place at the historic first Showdown at the Adelaide Oval.

"Jarman's come in and stepped up right away," Ebert said.

"Even in Dubai, there were a couple of training sessions there where he dodged around a couple of blokes and took off, and you just look and go, 'Oh, this guy's got some skills'.

"Hopefully the way he's been going, he'll get a chance to have a run around in the NAB [Challenge] and then you never know.

"Karl Amon's another one that has really stepped up and is training really well … he's [got] a slim build but he's definitely got some skill and ability."

Defender Jackson Trengove was an absentee from the session as he continues his recovery from a jarred knee.

The Power initially thought the worst when Trengove fell awkwardly during a marking contest last week, but scans quickly revealed no structural damage.

"At the moment he's still looking a bit tender," Ebert said of the 23-year-old.

"He's still moving a little bit slowly, but I'd say he'll recover quickly and he's always competitive and wanting to get back."

Ebert said the looming NAB Challenge could again launch the Power into the premiership season.

The club began last year in outstanding fashion, beating two fancied opponents in the Sydney Swans and West Coast.

It carried that form into the season proper and remained undefeated after the first five rounds.

"By the last couple of [trial] games you're really putting your strongest side out there and trying to play the way that we want to play all season," Ebert said.

"You're always wanting to win the game. I think that gives you confidence in what you're doing and backs up all the hard work you do over the pre-season."