Ben Osborn
The 28-year-old joined the Blades back in 2019, upon their promotion to the Premier League under former boss Chris Wilder. The initial deal that he signed is set to expire in the summer of 2023.
A former England youth international, he played for Nottingham Forest (despite being a Derby County supporter as a youngster) before making the jump to South Yorkshire.
This season, Osborn has made 14 Championship appearances for Sheffield United, scoring a single goal.