The versatile Hungary international joined the Club from Barnsley on an initial loan until the end of the season, with a Club option to make the deal permanent following the conclusion of the campaign also included.
Styles has a wealth of experience under his belt having made 222 senior appearances to date, including 124 in the Sky Bet Championship.
Equally comfortable playing in midfield or at left-back and left wing-back, the 23-year-old becomes the Club’s third January arrival following the permanent signings of Leo Hjelde and Romaine Mundle.
Styles progressed through Burnley's academy before signing for Bury aged 16 and he represented his hometown Club on 47 occasions, with a move to Barnsley coming to fruition in 2018.
He spent the majority of last season on loan in the second tier with Millwall and has earned 18 international caps with Hungary, who he is eligible to represent through his grandparents.