Fiorentina sports chief Pantaleo Corvino wants to bring forward plans to land Sporting Lisbon midfielder Miguel Veloso.
The Viola have held several rounds of talks with Sporting about an end-of-season deal for the Portugal international.
However, if Corvino can find a buyer for Giampaolo Pazzini, who is interesting West Ham United, he will use the cash raised to bid for Veloso during next month's market.
Fiorentina want £7 million for Pazzini.