The situation is said to have alerted Bundesliga sides, with Liverpool proposing a more incentive-based deal.
Juventus are named as one of the clubs monitoring these developments, with the Bianconeri in the market for a midfielder this summer.
Juventus are keeping an eye on a contract dispute between Liverpool and Emre Can, reports in England suggest.
With a current deal expiring in summer 2018, they run the risk of losing the player on a free transfer should talks continue to stall.
The 23-year-old central midfielder is said to want a vastly impr21点官网oved offer, but the Reds are dragging their heels.
According to the Daily Mirror, Coach Jurgen Klopp is not convinced that the German has fully realised his potential, and therefore an offer reflect this.<网络外围投注/p>
The Italian press also reported that the club had sent scouts to watch the German international back in January.