Bayern Munich have spent the week in talks with Tottenham for Harry Kane.
The England captain has been the subject of an opening offer of £70m from Bayern, which has been rejected.
However, TMW says Bayern remain determined and have maintained contact with Spurs throughout the week.
A new offer of £80m plus bonuses is being drawn up and due to be tabled.
However, it will still fall short of Tottenham chairman Daniel Levy's £100m asking price for his centre-forward.