Caleb Clarke is powerful but would prefer to run around defenders rather than over them.

OPINION: There can be few observers who are still blase about the quality of players leaving New Zealand's shores.

At this time of year, when European clubs announce new signings, it can seem that anyone who has laced up a pair of boots in New Zealand is heading for the airport departure lounge. It hurts.

Yet it is not quite the full story. There is also the new intake of Super Rugby players to consider - the younger players who are coming up and replenishing the stocks. Peppered through the squads this year are some young men who can make a big impact.

At the Blues, Caleb Clarke fits that bill. In fact, Clarke's talent is already something of a badly kept secret - and he could well be the star of the Hamilton Sevens this weekend.

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He may be 107kg but his greatest asset is speed. Indeed, what stood out in Clarke's performances in the New Zealand under 20s last year was his desire to beat opponents with footwork and pace rather than take them on in the contact.

The purists will love his ability to get on the outside on that left wing and carry the ball in his left hand. It is hard to believe Clarke doesn't turn 19 until March but he looks to have similar potential to another young Blues wing who ended up doing quite well for the All Blacks last year.

PHOTOSPORT Tasman centre Levi Aumua will bring his big frame to the Chiefs' backline this year.

The Chiefs' Levi Aumua is a fascinating prospect. It is no secret that the Chiefs have tried to import a bit of size for the outside backs and they recruited Aumua from Tasman after failing to lure the likes of Seta Tamanivalu.

Aumua is hulking. He regularly breached the line at Mitre 10 Cup level but the key for him will be conditioning. A hard Chiefs pre-season will presumably arm him with the tools he needs to prosper at Super Rugby level, where his 110kg frame could frighten a few defenders from either the centre or wing position.

RICKY WILSON/STUFF Will Jordan of the Crusaders is a classy operator from fullback who has speed and awareness.

Will Jordan of the Crusaders moves like a Rolls Royce. Another graduate of the excellent under-20s programme, the fullback has lovely balance and is big enough to handle himself at the next level.

Competition among the Crusaders' outside backs is intense - we could have easily have highlighted another rookie here, Braydon Ennor - but Jordan's all-round game and pace could allow him to flourish on the wing as well as the No 15 jersey.

PHILLIP ROLLO/STUFF The dynamic Shannon Frizell should be suited to playing on a dry track in Dunedin.

Down south at the Highlanders, Shannon Frizell is another product of the Tasman Super Rugby factory. His brother Tyson is a tough NRL forward at St George Illawarra and Shannon shares those attributes even though athletically they are chalk and cheese.

Shannon, at 195cm, is by far the taller, and that height allows him to express himself as both a skilful, ball-running loose forward and a lineout option.

Liam Squire, Elliot Dixon and Luke Whitelock are ahead of Frizell in the queue but the Highlanders' culture of hard work and underrated set-piece work is the perfect place for young forwards to advance their games.

MARTY MELVILLE/PHOTOSPORT The Hurricanes' Alex Fidow was virtually unstoppable in tandem with Asafo Aumua at Wellington last year.

Hurricanes tighthead Alex Fidow could surprise overseas opponents this year. They'll be expecting Asafo Aumua's dynamic contributions but they might not yet know that Fidow is almost as explosive and skilful - at 135kg.

It is hard not to draw similarities between Fidow and the Reds' Taniela Tupou. They are around the same age and occupy the same position.

Yet Fidow's performances with ball in hand for Wellington last year - after he got fit and shed some excess baggage - suggests the better prospect might be on this side of the Tasman.