Barnsley left-back Ben Williams is facing an extended period out of action after suffering a serious knee injury.
The 21-year-old damaged an anterior cruciate ligament at a pre-season training camp at the St George’s Park national football centre.
“Absolutely gutted to have picked up an injury setback at such a bad time and be out for a while,” Williams posted on his Instagram page.
Meanwhile, midfielder Callum Styles has agreed a new deal to run until 2023.
The club has an option for a further 12 months after the 20-year-old played 18 games in 2019-20.
He scored his first goal in the 2-1 win at Brentford which ultimately secured their Championship status.
“The end of last season was incredible both for me personally and for the team, but we must build on that and look forward to the future,” he said.
Barnsley have yet to confirm how long Preston-born Wales Under-21 international Williams is expected to be sidelined.
But, following Saturday’s 2-0 friendly win over Crewe, head coach Gerhard Struber told BBC Radio Sheffield it was a “big injury”.
