7721
He was only briefly a regular first-choice player for the side , as a left-back in 2000 under Kevin Keegan 's management .
 person: Kevin Keegan
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Kevin Keegan