I agree, though this does seem legit - the source is a Croatian site, which claims Inter rejected a €40m bid, but that they would be powerless to resist a €50m bid (his release clause) if Brozović wanted to leave.I think twitter just likes to circulate stories like Brozovic because people are desperate now and will retweet/like anything and everything.
They do say they believe Brozović is happy at Inter and that he's more likely to agree a new contract with them than join us.