Burton Albion midfielder Jack Dyer has signed a new two-year contract.
The 20-year-old made 18 appearances for the Brewers last term and was a regular in the second half of the season.
Zambian forward Adi Yussuf, 19, has agreed a one-year contract but Albion have released five players including midfielder Andres Gurrieri, 22, and defender Patrick Ada, 27.
Danny Blanchett, 24, Kristian Ramsey-Dickson, 22, and James Wren, 18, will also not be offered new contracts.
Midfielder Jimmy Phillips is currently considering an offer to spend two more years with the Brewers.
The 22-year-old former Stoke trainee joined Burton three years ago and made 36 appearances this season as they finished 17th in League Two.
Argentine midfielder Gurrieri joined in October after a successful trial spell and played 14 times, but his last appearance was in February.