user: Question: what's current club with player being Nikolaos Chatzivrettas
Columns: ['No', 'Player', 'Height', 'Position', 'Year born', 'Current Club']
Types: ['real', 'text', 'text', 'text', 'real', 'text']
Sample row: [4.0, 'Theodoros Papaloukas', '2.00', 'Guard', 1977.0, 'CSKA Moscow']
SQL:

assistant: SELECT "Current Club" FROM "Table" WHERE "Player" = 'Nikolaos Chatzivrettas';