Most expensive transfers TO club in season 1998/99 | Fees in euro (EUR) |
| 1 |  D. Żuberek (24) |  Piotrcovia Piotrków Trybunalski |  ŁKS | 1998, Jul | |
| 2 | P. Matys (20) | FC Lausanne-Sport | ŁKS | 1998, Jul | |
| 3 | Batata (19) | Polonia Gdańsk | ŁKS | 1998, Aug | |
| 4 | J. Dziedzic (18) | Piotrcovia Piotrków Trybunalski | ŁKS | 1998, Sep | |
| 5 | A. Kosciuk (24) | Piotrcovia Piotrków Trybunalski | ŁKS | 1998, Sep | |
| 6 | M. Osiński (20) | Piotrcovia Piotrków Trybunalski | ŁKS | 1998, Sep | |
| 7 | J. Paszulewicz (21) |  Lechia | ŁKS | 1998, Dec | |
| 8 | R. Górski (25) | Górnik Konin | ŁKS | 1999, Jan | |
| 9 |  Julcimar (20) | Lechia | ŁKS | 1999, Jan | |
| 10 | M. Łabędzki (18) | ŁKS Łódź U19 | ŁKS | 1999, Jan | |
| 11 | M. Danielewicz (22) | Lechia | ŁKS | 1999, Jan | |
| 12 | R. Grzelak (16) | Orzel Lodz | ŁKS | 1999, Mar | |
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