He's a tout.
From Websters:
tout \"taut,
1 : to spy on : watch
2 a Brit : to spy out information about (as a racing stable or *****)
b : to give a tip or solicit bets on (a racehorse)
3 : to solicit, peddle, or persuade importunately <not meant to tout you off the movie — Russell Baker>
4 : to...