Hill has also confirmed that Blackpool have made a bid for the 23-year-old striker, but admitted that it was short of his market value.
"Blackpool have been in contact. Blackpool have tabled a bid, it hasn't been accepted by the club," Hill told the club's official website.
"They have to come back with slightly more money on a down payment."
Grant, who has also been linked with a number of Football League clubs, has just one year remaining on his current contract.