Mohamad Salah's superb early season form may cost Liverpool.
The Egyptian has been a revelation since arriving from Roma in the summer, having scored 20 goals across all competitions and leading the Premier League Golden Boot chart with 14.
But due to bonuses included in Salah's transfer fee, Liverpool could forced to pay £1.3m to his former club due to his goalscoring exploits, according to reports in the 24-year-old's homeland.
Roma, as a public listed company, had to release the details of Salah's transfer to Anfield back in June.
Their statement at the time said: "AS Roma announces that it has signed with the Liverpool Football Club and Athletic Grounds Limited the contract for the final sale of football player rights to football player Mohamed Salah Ghaly, against a fixed fee of 42 million euros, plus a maximum of 8 million euros for bonuses linked to the achievement by the English club and the player of certain sports goals."
It is believed that a goal clause was included in the 8million euros worth of bonuses mentioned in the statement.