He will be less fondly remembered by Tottenham Hotspur supporters, as a London rival of the club who managed to get one over them from time to time.
But the now BBC pundit has good memories of playing the north London side, which he expressed to his followers on Twitter.
@trevor8sinclair what is your fondest memory in a West Ham shirt and worst memory in a West Ham shirt? You're a legend by the way!— Sam Hunt 父 (@SHunt_92) July 10, 2015
Meanwhile, the former West Ham midfielder also gave his verdict on the east London club leaving Upton Park for the Olympic Stadium.
Sinclair cited the example of one of his other ex-clubs in Manchester City, who have benefited from moving to the Commonwealth Stadium.
This will be West Ham's last campaign at the Boleyn Ground before their move, while Tottenham have, incidentally, also released updated plans for their new stadium. And Sinclair feels it will be a good move for the Hammers: