Mighty Cats Codeword

Have fun playing Detective, as you solve this codeword puzzle. 

Each letter of the alphabet is used at least once, and is represented by the same number wherever it appears in the grid. For example, all the 22s are a B and all the 20s are a D.

You have 3 letters to start you off.  Can you crack the code?  Once you have completed the puzzle, the highlighted squares will reveal the letters that spell out the name of our mystery Geelong player.  Unjumble the letters to find the solution.