Former Burton Albion loanee Tyler Walker has signed a new long-term contract at Championship rivals Nottingham Forest.
The 21-year-old - who was already under contract until the summer of 2019 at the City Ground - has penned a three-and-a-half-year deal with the Reds.
Walker spent the second half of the 2015/16 campaign on loan with the Brewers and would go on to make six appearances.
That included an influential appearance off the bench in the 1-1 draw at home to Bury, when he flicked home an injury-time equaliser to secure a crucial point on their way to promotion into the Championship.
A loan at League Two Stevenage followed last term for Walker - but he is now regularly competing for a first-team spot with Forest.
He scored twice in a 4-0 victory over Queens Park Rangers earlier this month, and appeared in Sunday's 2-0 home defeat to Cardiff City.
