There are just three days left of the January transfer window and Derby County are in the market for a few additions. Although a striker remains a priority for Paul Warne, a midfielder is also on his agenda, but he must let a player go to bring one in. Derby remain firm on their stance that midfielder Max Bird isn’t for sale during this window and while that decreases the chance of signing someone else in that position, Warne is still eager to invest. Several central midfielders have been linked with a move to Pride Park, but the most prominent of those has been Reading’s Charlie Savage. The R…