The 23-year-old Dubbo product has played eight first grade games since debuting in 2018 will join the club for the remainder of the season with a chance at securing a longer-term deal.

The club will have some room to move given the departure of James Graham and Tyson Frizell from next year, while Jack de Belin is off-contract having been paid full salary over the past two seasons and court dramas drag on.

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The Dragons had been linked to Canberra's John Bateman and Cowboys livewire John Asiata but club recruitment chief Ian Millward said the weight of injuries suffered across the league and the shortened season has made mid-season recruitment difficult.

"Clubs at present are reluctant to let players go due to the current wave of injuries throughout the competition, while the players themselves are nervous because there's no reserve grade at present," Millward said.

"Another challenge is that a lot of other clubs are still looking for players themselves. We fielded phone calls from the Raiders last week, as an example, who too are short on middles while we're on the phone to 14 other clubs trying to do the same thing.

"It's a cycle in the NRL at the moment. Clubs are in constant dialogue as they look to secure the required 29 players before the August 2 signing deadline."

Millward said Ellis's inclusion for the remainder of the season was key for the club's depth.

"Kaide is a very formidable figure and has been a standout in the Canterbury Cup over the past few seasons, and all the while has always being on the periphery of first grade selection," Millward said.

"Kaide comes with high credentials in regard to his attitude and work ethic and will be a good inclusion to our squad character-wise. Kaide was off contract with the Panthers and we have now presented him an opportunity to put a stake down at the Dragons moving forward.

"The key for the Dragons was to find a back-up behind our current squad."