Circati is the one who I think can start next season and depending on his form will continue starting. He is 20 and basically a prodigy for Parma being that young and ready. Would be hard to find a better replacement at CB for Parma's needs as well. I think Irvine will still be prominent, especially with his goalscoring, if that drops off it'll be interesting. 

I do think Irankunda will appear for Bayern but i don't really include that. I think in a few years we will have like 5-10 in top 5 leagues too with Bos, Volpato, Robertson and Irankunda.