A match for pan-fried steak in a creamy mustard sauce

Could you make a suggestion for a pan-fried flank steak with a mustard/cream sauce consisting of shallots, white wine, chicken stock, cream, and Dijon mustard?

You’ve got two things to consider here - the steak which suggests a red wine and the sauce which is creamy and also contains mustard which needs a wine with some matching acidity.