"Van Dijk, he is having a scan and I am waiting for the results at the moment," Puel told the club website (www.southamptonfc.com).
"It's not serious, but I don't know if he can participate in this game. We will see in the next days before the game."
Midfielder Steven Davis, who has been injured since Southampton beat Liverpool 1-0 in the semi-final first leg on Jan. 11, could return in time for Wednesday's match after stepping up his recovery.
"It's better for Davis," Puel added. "We will see in the training session if he can participate in this game or not."
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(Reporting by Simon Jennings in Bengaluru; Editing by Amlan Chakraborty)
