Cardiff will need to stump up at least £10million for the influential attacker as manager Jos Luhukay braces himself for a late attack for his better players.
The summer transfer deadline passes on Thursday at 5pm, and the Bluebirds will need to move fast if they are to prize the forward away from Hillsborough.
Forestieri made 11 appearances last year during an injury-hit campaign but managed to score five goals.
The 28-year-old started this season off with a goal in the 3-2 defeat to Wigan Athletic last Saturday.
Read rest news on next page