Cheltenham defender Gavin Caines is expected to be back in training within six weeks.
Caines has undergone a knee operation after picking up a cartilage problem last week.
He will miss the start of the new League One season, but Cheltenham are hopeful the player will return around mid-September.
"Gavin's operation went very well," Cheltenham physio Ian Weston told the club's official website.
"Our consultant orthopaedic surgeon was happy with the results and the operation also confirmed the initial diagnosis, so we know what Gavin has to do now.
"We are looking at six weeks for him before he is ready to return."