Castleford prop Lewis Peachey will join Championship side Sheffield on a three-year deal from the 2023 season.
The 21-year-old has made 11 appearances for the Tigers since making his first team debut in 2019. He spent this season on loan at Newcastle Thunder in the Championship.
Derbyshire-born Peachey came through the ranks at Castleford and can play anywhere in the forward pack.
Sheffield boss delighted to sign Lewis Peachey
Eagles director of rugby Mark Aston said: “Lewis is exactly the sort of player and person we want around the club.
“He’s at the start of his career and is motivated to really push on and make an impact. I believe he will do that with ourselves.
“We have improved as a team and as a club in 2022. With Lewis on board, as well as the others that are going to come in, our goal is to push for the playoffs rather than look over our shoulder.
“We have seen improvements in the pack this year. Lewis can play in the front and back-row so that helps when we want to change things up during a game.
“I’m sure you’ll all join me in welcoming Lewis to the club.”
The Eagles finished seventh in the Championship league table in 2022. Aston’s side won 12 games from 27.
Sheffield have also tied down veteran half-back Anthony Thackeray, winger Ben Jones-Bishop and centre Kris Welham on new deals for 2023.
Jones-Bishop, 34, is hoping to play in his first World Cup for Jamaica this autumn, having already won three caps for the Reggae Warriors. Playmaker Thackeray, 36, has decided to take a U-turn on his retirement decision to play on next season.