And Castagne could also find himself at Celtic Park, say the Daily Mail, as the Scottish Premiership side hunt out a replacement for Mikael Lustig.
The 23-year-old Belgian defender joined the Italian side, currently chasing at Champions League berth in Serie A, back in 2017 from Genk, replacing Andrea Conti.
He made 22 appearances last season but has only managed six league starts this year leaving the player unhappy.
Castagne has even admitted he feels unloved by coach Gian Piero Gasperini.
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He said on Wednesday: “I spoke more with [Belgium coach] Roberto Martinez in one day than I spoke in a year and a half with Gasperini. I need playing time to stay. Everything can go very fast in the world of football.”