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:
| Team | Outgoing manager | Manner of departure | Date of vacancy | Replaced by | Date of appointment |
| --- | --- | --- | --- | --- | --- |
| Konyaspor | Raşit Çetiner | Sacked | 17 September 2008 | Giray Bulak | 24 September 2008 |
| Kocaelispor | Engin İpekoğlu | Sacked | 25 September 2008 | Yılmaz Vural | 28 September 2008 |
| Beşiktaş | Ertuğrul Sağlam | Resigned | 7 October 2008 | Mustafa Denizli | 9 October 2008 |
| Ankaragücü | Hakan Kutlu | Sacked | 20 October 2008 | Ünal Karaman | 24 October 2008 |
| Antalyaspor | Jozef Jarabinský | Sacked | 28 October 2008 | Mehmet Özdilek | 28 October 2008 |
| Hacettepe | Osman Özdemir | Resigned | 2 November 2008 | Erdoğan Arıca | 3 November 2008 |
| Denizlispor | Ali Yalçın | Resigned | 2 November 2008 | Ümit Kayıhan | 10 November 2008 |
| Gençlerbirliği | Mesut Bakkal | Resigned | 3 November 2008 | Samet Aybaba | 5 November 2008 |
| Bursaspor | Samet Aybaba | Resigned | 4 November 2008 | Güvenç Kurtar | 4 November 2008 |
| Ankaragücü | Ünal Karaman | Resigned | 8 December 2008 | Hakan Kutlu | 2 January 2009 |
| Bursaspor | Güvenç Kurtar | Resigned | 23 December 2008 | Ertuğrul Sağlam | 2 January 2009 |
| Kocaelispor | Yılmaz Vural | Resigned | 29 December 2008 | Erhan Altın | 17 January 2009 |
| Denizlispor | Ümit Kayıhan | Sacked | 5 February 2009 | Mesut Bakkal | 6 February 2009 |
| Galatasaray | Michael Skibbe | Sacked | 23 February 2009 | Bülent Korkmaz | 23 February 2009 |
| Hacettepe | Erdoğan Arıca | Resigned | 2 March 2009 | Ergün Penbe | 2 March 2009 |
| Gaziantepspor | Nurullah Sağlam | Resigned | 9 March 2009 | José Couceiro | 6 April 2009[ citation needed ] |
| Konyaspor | Giray Bulak | Sacked | 19 May 2009 | Ünal Karaman | 20 May 2009[ citation needed ] |
Question:
What is Replaced By, when Date of Vacancy is "23 February 2009"?
Answer:
Bülent Korkmaz