Saracens boss Mark McCall knows he has a new toy to play with in back-rower Billy Vunipola but will be patient in nuturing his skills.
Vunipola swapped Wasps for Sarries this summer - having signed a deal with McCall's side in January - and will team up with brother and prop Mako at Allianz Park.
It has been a whirlwind year for the 20-year-old already after scoring a try on his England Test debut in a 32-3 thumping of Argentina in June.
And the Australian-born forward could make his Saracens bow against London Irish in the Premiership's London Double Header weekend at Twickenham on September 7.
But McCall has warned that, although Vunipola is one of the hottest prospects in town, he faces a fight to bustle his way into a formidable back row boosted by the return of flanker Jacques Burger from injury.
"Billy's young at only 20 but he has the world is at with feet," said McCall.
"But he's still learning and growing and fitted in really well after a great England tour over the summer.
"Physically he is incredible but we can make him fitter, make him work hard and bring some polish to his game. But he's almost ready for any level I think.
"As much as it's very exciting to map out his progress it's very long-term with Billy as well as we have a really strong back-row already.
"Ernst Joubert has been the number eight for us the last four seasons and he's stood out as one of the most consistent players in the Premiership.
"And more good news is we've got Jacques Burger back from injury this year which is almost like a new signing for us, he's hasn't played for two years and in the pre-season games he's showed up well so far he's encouraging.
"James Johnston at prop from Quins has equally come to the club and fitted in seamlessly - he's been with us before as well as he came through the academy.
"As everybody knows we're on rotation at the club and everybody gets an equal amount of attention, so if they impress enough they'll get their chances."
Saracens are heading into the new Premiership campaign off the back of a promising 2012/13, in which they finished top of the pile in the regular season and lost out in a hard-fought tie against eventual champions Toulon in the Heineken Cup.
However McCall - who expects a tough season opener against a rebooted Exiles side - admits the disappointing Premiership semi-final defeat to Northampton Saints still leaves a bitter taste in the mouth.
"It was the manner of the defeat that rankles with us a little bit, having been so consistent all season - finishing top of the Premiership in the regular season, top of our Heineken Cup pool - it was very disappointing to leave our worst performance to the last," he revealed.
"I suppose the task at this time of year is not to worry about that kind of thing. We as a club decided three or four years ago that we wouldn't pick and choose matches, we want to be consistent week in week out."