Max Evans' injury appears not to have been as bad as was initially feared, but the Glasgow Warriors and Scotland centre could still be out of action for most of the rest of this year.

The 25-year-old, who had been on the standby list for the British and Irish Lions and was also set to play for Scotland in the International Sevens tournaments at Twickenham and Murrayfield later this month, suffered the injury during Sunday's defeat by the Ospreys.

He was stretchered from the field and such was the concern that Evans may have had to undergo a full knee construction that Gordon Mackay, the leading sports surgeon, was consulted in a bid to ensure that he would get state of the art treatment.

Scans suggest that the damage to the joint is not as comprehensive as was suspected. "The outcome of yesterday's scan shows that Max's anterior cruciate ligament is intact which is positive news," said Gerry Haggerty, the Warriors team doctor.

"He has a medial ligament injury and some cartilage damage. He will undergo an operation to repair the cartilage and this procedure will also uncover any injury to the ACL that the scan may not have revealed. At this stage, we can estimate that Max could be out for approximately four to six months."

The Warriors will, meanwhile, be represented by a powerful side including six Scotland sevens internationalists - Mike Adamson, Scott Forrest, Jamie Hunter, Graham Hogg, Chris Kinloch and Colin Shaw - at this weekend's Chard Glasgow City Sevens staged at the Cartha Queen's Park club this weekend.

The tournament will feature full-time professional teams from all four home unions, with Ireland represented by Ulster, Wales by Newport Gwent Dragons and England by Sale Sharks and Newcastle Falcons.

 Ian McGeechan, the British and Irish Lions head coach, will leave his post as director of rugby at Wasps at the end of the season and take charge of the next step in London Scottish's bid to return to English rugby's elite. Scottish were promoted to the third tier this season and are focused on climbing back to the top flight as quickly as possible.