"Andy's certainly in the running for the Lions," said Young, who is now in his sixth season coaching the Blues having retired as a player in 2002.
"I've not seen a better performance from a No8 in the northern hemisphere this autumn."
Having been the form Welsh back row in the Magners League and Heineken Cup so far this season, Powell starred on his international debut against the Springboks at the beginning of last month. The nature of his arrival of the world scene may have shocked many pundits but Young admits that he was far from surprised by the impact made by the 27-year-old.
"I've never doubted Andy's ability but it's great that he's fulfilled his potential everyone has known about for a number of years.
"It's not been his fault because he's had bad shoulder injuries but, during that time out, he probably realised the clock has been ticking."
Powell's rise to the top has been far from straightforward, having been interrupted by injury and taken in spells with Newport, Beizers and Leicester Tigers. His club coach believes that the build up to next year's Lions tour still offers Powell plenty of time to improve - an exciting prospect considering the impression he has already made during his short international career to date.
"Andy's really matured over the last year and is making his mark now - he's been a massive player for us this year. His ball carrying and evasive skills are as good as anybody in world rugby. But there is still more to come.
"He wants to be the all-round number eight. We know he can do the unexpected but he can still improve.
"The Six Nations will be a big factor and teams will focus more on Andy's strengths than weaknesses. It will be another test and a hurdle for Andy to get over and he needs to keep adapting and improving."