Vlasic has been linked with AC Milan this summer.
CSKA are demanding €20-25m and will only release him on loan at a cost of €10m, with option to buy for a further €10-15m.
“I offered Vlasic to all the top Italian clubs, including Napoli," agent Tonchi Martic told Metaratings.
“What are the odds of him leaving CSKA Moscow? It's hard to say at this moment."