The midfielder was forced off during the 1-0 victory on Saturday and left the game on crutches, though Nigel Adkins remains unsure of how serious the injury is
Southampton captain Adam Lallana is in line for a scan on his knee after being withdrawn during the 1-0 victory over Reading on Saturday.
The Saints won the game thanks to a Jason Puncheon goal, but the English midfielder was forced to come off in the 41st minute after a challenge with Jay Tabb left him prone on the pitch.
Lallana, who has featured in every Premier League fixture this season for his side, left St Marys on crutches and Nigel Adkins confirmed the need for a "better prognosis".
"We've got him in a brace and he is on crutches at the moment, that is standard procedure," he told reporters.
"He has got a knee injury and what we will do is assess that over the next 24 to 48 hours and that will give us a better prognosis to how long potentially he will be out for."
Although Southampton have been afforded some respite with the international break - their next fixture being a vital clash against fellow relegation strugglers Sunderland on December 22 - Adkins refused to make any predictions as to when his talisman will return.
"It could be short, it could be longer," he continued. "We don't know so we won't guess at the moment."