Wrexham coach Phil Parkinson announced that midfielder Ben Sheaf could miss the remainder of the season with a knee injury suffered in Saturday's 5-3 win over Ipswich Town.
Sheaf, 28, joined the Red Dragons from Coventry City last summer.
"Ben's not looking good and that's a real blow for us," Parkinson said on Monday. "As much as there was a feeling of excitement after the win; the coaching staff and I had that always in the back our minds.
"The initial prognosis is it will be 10 weeks and a damaged medial ligament. We know have to move on and Ben will get the best possible treatment."
The news came just hours after the club announced that midfielders Ollie Rathbone and George Dobson have signed news deals that put them under contract with the Welsh side until the end of the 2028 season.
Some more wholesome Dobbo x Rathbone content 😀
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Both joined Wrexham in the summer of 2024 and played key roles in the club's promotion from League One to the Championship last season.
Rathbone, 29, returned in December from a serious ankle injury suffered during the club's preseason tour of Australia and New Zealand.
He has six goals in 16 appearances since his return, and has eight goals in 42 league appearances with Wrexham.
The Manchester United academy product joined Wrexham from Rotherham United, and has made 64 overall appearances for the Red Dragons.
"I'm absolutely delighted to sign a new contract. It's a special day for me and my family. I'm over the moon," Rathbone said. "My time here has been great so far. It's probably the best football I've played in my career.
"I want to keep playing, keep improving, and create more special moments for this club."
Dobson, 28, has played in all but three of the club's 33 league matches this season after making 48 appearances last season. He has three goals in 83 overall appearances with Wrexham.
"It's been an amazing 19 months. I've loved every minute of it. It's been a fantastic journey so far," Dobson said. "I'm delighted to extend, and hopefully we can create many more special memories."
Dobson played for Parkinson at Sunderland, and also made 144 appearances for Charlton Athletic.
"They're both really good lads, and good players, who've made significant contributions for us last year and this season," Parkinson said. "They both typify what we want at the club – they play with real heart and commitment every single game, and it's great that they've got new deals."