Lazio chief Claudio Lotito wants Manchester United to pay no less than £105million for star midfielder Sergej Milinkovic-Savic, who was linked with a move to Old Trafford this summer.
The club president insisted that the Serbian's price tag would rise every month, in a bid to bat away offers from the Red Devils and Juventus in January.
United actively pursued the Serbian this summer after failing to land priority transfer target Frenkie de Jong from Barcelona, although Erik ten Hag's side were able to lure Real Madrid midfielder Casemiro in August.