5m is a petty sum you sell average little youngsters for. Like Lanzafame or such. Someone who has had his career and earns that big of a salary, going for 5m would be a loss in investment. But yeah, due his meeeh peformances, and most importantly, due to his somewhat big salary ( reason he turned down clubs, to keep his salary), no one will be willing to invest in him, we will be lucky if we can get anything of worth out of his sale. Its delusional to think otherwise, as cyril seems to be.
Though you seem to be too pessistimic, because i dont think they would accept a 5m offer for him. We will defenitely get more then that.