Dragons coach Darren Edwards insists Wales' player drain to France is a "huge worry" for the national game.
Wales lock Luke Carteris announced last week he was leaving Rodney Parade
at the end of the season.
And his regional colleague Aled Brew has also been linked with a move to French club rugby.
"I think everybody is trying to steal our good players at the moment. It's a huge worry. I think we are all feeling this heat in Wales," said Edwards.
"We are working hard to produce good players and unfortunately we can't capitalise on their services.
"I think we are all worried now and it's an issue that needs to be addressed in the future."
The Dragons suffered a major blow with the loss of 28-year-old Charteris, one of Wales' stars of the 2011 Rugby World Cup campaign.
French club Perpignan are favourites to sign the big lock, while a team from Japan and a Super 15 franchise are also interested.
Edwards could not hide his disappointment at the loss of Charteris, who is likely to follow Mike Phillips, Lee Byne and James Hook to the Top 14.
"I'm disappointed as everyone else because we have lost a very good player," said Edwards.
“Luke's a really good honourable guy with really sound principles and the reasons he is making the decision is fair enough”
"Luke's a really good honourable guy with really sound principles and the reasons he is making the decision is fair enough.
"We saw [how good Luke was] in the World Cup. Wherever he goes I'm sure he will do well."
As well as the permanent loss of Charteris the Dragons also have injury worries surrounding another Wales international.
Brew limped off 57 minutes into their
23-19 Amlin Challenge Cup defeat to Exeter Chiefs at Rodney Parade
on Sunday, and is now a doubt for the RaboDirect Pro 12 derby at Cardiff Blues on Friday night.
"He has got a dead leg. It was a shame it happened in the first couple of minutes of the game. Because we need Aled out there - he's such an influential player for us.
"He tried to fight on through, but he just couldn't do it.
"I'm not sure [whether he will be out]. It's going to take a good few days to get over this one."