Glasgow Warriors prop Jon Welsh has undergone shoulder surgery and is expected to be out of action for the first few months of the season.
The 27-year-old had the operation to fix a recurring shoulder problem.
"We're disappointed for Jon that he's going to miss the first few weeks of the new season," said Glasgow Warriors head coach Gregor Townsend.
"He played a lot of rugby for us last season and he worked hard to become a consistent performer.
"His recent surgery will allow him to train fully on his return and play even better next season. We wish him all the best in his recovery period."
Welsh has won three caps for Scotland and is just short of a century for Glasgow, currently on 96.