Scotland and Glasgow Warriors hooker Fraser Brown is facing a race against time to be fit for the Autumn Tests in November.
The 28-year-old last week successfully underwent ankle surgery at the BMI Ross Hall Hospital in Glasgow.
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Brown, who has been capped 28 times by his country featured in all eight Test matches in 2017 but is expected to face a recovery period of up to four months.
The first Autumn Test is against Samoa on November 11 while Glasgow start their season in early September.
Meanwhile, following his involvement in the British & Irish Lions tour to New Zealand, Tommy Seymour will join up with his club team mates next month.