The trio, whose current deals are set to expire next year, have reportedly been offered three-year extensions with the Bundesliga club.
Speaking to Bild, sporting director Thomas Eichin confirmed: "I have made them an offer."
Eichin also declared his desire to see the players' futures determined before the opening game of the season in August.
"(That is) a realistic period and my goal," he added.
Junuzovic and Wolf have been with the club since 2012, while Prodl arrived from Sturm Graz four years earlier.
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