 Complete the following phrase:  A club may appoint two distinct roles: a club captain to represent the players in a public relations role, and correspondent on the pitch. Manchester United has had both of these types of captains: Roy Keane was the club captain on and off the pitch from 1997 to 2005 as he was a regular in the starting eleven, but his successor Gary Neville while nominally club captain from 2005 to 2010 had made few first team appearances due to injuries. In his absence other players Rio Ferdid or vice-captain Ryan Giggs were chosen to captain the team on the field, such as in the 