BOSS Bernard Jackman says Hallam Amos is “raw” at full-back but believes 15 is the perfect position for the Wales star to spark the Dragons attack into life.

The 23-year-old has been released from Six Nations camp to start in Sunday’s Guinness PRO14 clash with Benetton at Rodney Parade (kick-off 3.30pm).

Amos was man of the match in last Friday’s 15-15 draw with Glasgow in his first game since suffering an ankle injury against Cardiff Blues on Boxing Day.

That was with 15 on his back and Jackman expects another stellar display from his Wales star, who has been predominantly a winger in Test rugby.

“We saw what a boost he gave us after coming in without having trained,” said the head coach.

“He gave us that launchpad from the back and was central to most of the good moments that we had with ball in hand.

“Hallam trained with us on Thursday and will train with us again on Friday, so we expect even more from him on Sunday. It’s a big boost for us because full-back is the key position in attack.

“Most teams are so organised and so defensively sound from set piece that counter-attack and turnover is where the space is.

“Having a strike runner like him is important. Earlier in the year he was playing left wing and he is very adept there, but we see him as a full-back going forward.

“He still has a huge amount of work to do and is raw [at full-back] but he is a very, very special player. I was lucky enough to play with guys like Brian O’Driscoll, Shane Horgan, Denis Hickie, Keith Earls and he definitely has a huge amount of ability.

“Hallam has stuff that you can’t coach – he can beat people, he can stand people up and beat them with pace, power and footwork. We just have to coach him on the positioning of full-back and make sure he has clarity in that.”

Amos starred for Wales on the wing in the autumn and has rivals for the Test start at 15 in Leigh Halfpenny and Liam Williams, but Jackman has discussed the move with the international management team.

“I spoke to Rob [Howley, attack coach] about it,” he said. “In fairness they gave us the freedom to pick him where we want but we both felt his best position is full-back.

“He can play international rugby on the wing but realistically to be a stand-out international player, full-back would be his position.

“And for us, we want our best players getting the ball with both sides to attack in open space, and full-back gives him that.”

Amos will be at full-back with Zane Kirchner continuing at fly-half with Arwel Robson back from an ankle injury to be his deputy.

Playmaker Gavin Henson is out after suffering a leg twinge this week but will be back for Edinburgh in Ebbw Vale next Friday.

Lewis Evans is back to make his second appearance of the season at blindside flanker after suffering a torn pectoral muscle at the Ospreys in October.

The Dragons, who name their team at midday, are still without wing Ashton Hewitt because of a foot injury.