Former Inter Milan president Massimo Moratti has slammed Romelu Lukaku.
The Chelsea striker spent last season on-loan with Inter, but is now in talks with great rivals Juventus.
Moratti said: "It's okay that footballers have to economically maximize short careers, but from this to betraying the club where you had a good time, and which was close to you, is a bad thing and you just make a bad impression."
Moratti also commented on the emergence of the Saudi Pro League.
It's something new and also scary because there's no comparison with European clubs in terms of spending possibilities. They can offer 10 times more and close every conversation, everything changes in football."