Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Nat. | Name | Moving to | Type | Transfer window | Transfer fee |
| --- | --- | --- | --- | --- | --- |
| SCO | Martin Ure | Queen's Park | End of contract | Summer | n/a |
| SCO | Scott Hadden | Ross County | End of contract | Summer | n/a |
| SCO | Steven Campbell | Free Agent | End of contract | Summer | n/a |
| England | Joe Sagar | Free Agent | End of contract | Summer | n/a |
| SEN | Makhtar N'Diaye | Free Agent | End of contract | Summer | n/a |
| FRA | Antoine Ponroy | Free Agent | End of contract | Summer | n/a |
| GER | Stefan Klos | Retired | End of contract | Summer | n/a |
| Croatia | Dado Pršo | Retired | End of contract | Summer | n/a |
| SCO | Gavin Rae | Cardiff City | End of contract | Summer | n/a |
| SCO | Brian Gilmour | Queen of the South | End of contract | Summer | n/a |
| SWE | Karl Svensson | Caen | Transfer | Summer | £0.7m |
| ENG | Lee Robinson | Greenock Morton | Loan | Summer | n/a |
| CZE | Libor Sionko | Copenhagen | Transfer | Summer | £0.09m |
| Slovakia | Filip Šebo | Valenciennes | Loan | Summer | n/a |
| SCO | Ian Murray | Norwich City | Transfer | Summer | Free |
| ENG | Ugo Ehiogu | Sheffield United | Transfer | Winter | Free |
| SCO | Alan Hutton | Tottenham Hotspur | Transfer | Winter | £9m |
| NIR | Roy Carroll | Derby County | Transfer | Winter | Free |
Question:
What Transfer window that has a Transfer fee of free, with a Moving to of derby county?
Answer:
Winter