The midfielder was forced off in the first-half of defeat at Arsenal.
Frank said: It was a contact injury. Hopefully, fingers crossed, he'll be available for Burnley.
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I think Mathi, Vita and Frank did fantastically when he came off."
In-form fullback Sergio Reguilon missed the game on the day.
Frank added: Sergio has a minor hamstring injury - he should be available for Burnley."