Aaron Hickey could be set for a move away from Tynecastle.
The youngster has made 33 appearances for Hearts, but is believed to be a target for clubs in Italy, Germany and England.
Celtic are also reported to be keeping an eye on the 18-year-old.
BBC Scotland reporter Kheredine Idessane believes it will be "very hard" for Robbie Neilson to keep hold of Hickey and says the left-back has had a look around at Serie A side Bologna.
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On Sunday afternoon he tweeted: "Top flight clubs in Germany, Italy and England want him and as he’s in the last year of his contract, he could be a snip at around £1.5m. He’s been to @BolognaFC1909en for a look around...
"Next weekend he’s planning to go to @FCBayernEN (Bayern Munich) to see what they have to offer him...and @AVFCOfficial (Aston Villa) would like him to play alongside John McGinn in the English Premier League. Great options, with @swfc (Sheffield Wednesday) interested too, and @CelticFC wanting to be kept informed as well."
Elaborating on BBC Sportsound, Idessane said Bologna are believed to be willing to meet Hearts' asking price of £1.5m.
He also expects Hickey to travel to Munich to be shown around next weekend, with the Bundesliga giants reportedly willing to make HIckey their "best-paid reserve".
