England's powerhouse centre Ben Te'o may miss the autumn internationals with an ankle injury that will keep him sidelined for at least a month.
The 30-year-old was replaced early on in Worcester Warriors' win over Brive on Saturday and could be set for a longer spell on the sidelines if he needs an operation.
Warriors head coach Carl Hogg told the Worcester News: "He's being assessed currently and will head back down to Cardiff on Monday to see whether he'll go down a surgical route or whether it'll be managed conservatively.
"He's expected to be out for at least a month but we'll find out more next week once the swelling has settled down and it'll give us a better idea of timeframes."
The 30-year-old has won eight caps for England and impressed for the British and Irish Lions during their series against the All Blacks earlier this year.
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