10850
He eventually hung his boots up at the end of the 2007 – 08 season having spent his final season as player coach helping his former understudy Dean Gerken .
 person: Dean Gerken
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: Dean Gerken