185854
He has previously played for West Ham United , Rotherham United , Grimsby Town and Rochdale .
 West Ham United, Rotherham United, Grimsby Town, Rochdale
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 West Ham United, Rotherham United, Grimsby Town, Rochdale