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In 2005 he retired , but in 2007 , he accepted an offer to come-back and signed with Austrian side SAK Klagenfurt .
 SAK Klagenfurt
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 SAK Klagenfurt