Hunslet have handed a new one-year deal to prop Zac Braham for 2020.
The 25-year-old made 21 appearances for Hunslet last season, scoring three tries.
Hunslet coach Gary Thornton said: “Zac came back from a nasty break in his forearm to have a superb season, deservedly winning the Most Improved Player award.
“He has matured and he has recognised the need for the hard graft and never to cut corners. I’ve sat down with him and set some challenging targets for him next season, and he personally is expecting a big season.
“He is already working on the extras in training, is at the front of most of our conditioning drills, and is setting a marker down for the rest of the forwards.
“If he can stay injury free, I anticipate another good season for him. I’m delighted to have retained two of our best players from last season in Vila Halafihi and Zac.”