The club have confirmed Alfie Kilgour has a ruptured achilles.
Mansfield Town have issued a short statement on social media wishing Alfie the very best in his road to recovery following the injury that occurred during the team's away draw at Doncaster Rovers.
Kilgour had been a major part of Nigel Clough's squad since he signed for an undisclosed fee from Bristol Rovers in January.
He was one of four players injured in the bruising 2-2 draw with Callum Johnson, Aaron Lewis and Hiram Boateng also picking up knocks.
Reacting to the news, Clough said: “It’s a massive blow and we’re all devastated for Alfie first and foremost.
“It was so innocuous. Alfie stepped back with no-one near him.
“His form, his presence and performances since coming into the club in January have been immaculate.
"He’ll have a scan to confirm, [and then] an operation as soon as possible. He’ll be in a boot for a while and will then start the long road to recovery.
“We’re trying to get a defensive loan in.
“We have a couple of weeks left of the transfer window and will wait for confirmation from the scans of the others [Johnson, Boateng, and Lewis].”