Possible Clues:

• The outgoing one is the one on the move in the text
• Outgoing partner once leaving drink to catch Rolling Stone
• Outgoing minister on retiring embraced by old communist
• Man's racing to catch dog formerly on lead - such a character
• Outgoing type's former car entered in TT
• One may not be going out, but one is outgoing
• Displaying text about dog - the show-off
• Outward-looking
• Certainly no wallflower
• Gregarious old dog enters race