RB Leipzig are said to be showing interest in the 22-year-old Mathias Kvistgaarden this month - and will make a move if they can offload another frontman. Both the Premiership leaders and Eintracht Frankfurt are also said to be in the 'battle' for a deal. Brondby, Kvistgaarden's current club, are demanding a minimum of £8.4m to sell the player in the winter window.