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Newport Gwent Dragons have signed four youngsters while hooker Rhys Buckley will return ahead of the 2014-15 season.

Full-back Hallam Amos, 19, and once-capped by Wales, has signed a three-season extension that ends in 2017.

He is joined by Wales Under-20 squad members hooker Elliott Dee, lock Joe Davies and centre Tyler Morgan.

"These young lads will have their chance to become future Gwent and Wales stars," said Dragons boss Lyn Jones.

"I hope they succeed."

Buckley returns having spent 2011-12 at Rodney Parade before stints at Doncaster and current club Moseley.