The defender departed West Ham United for Crystal Palace on Tuesday.
West Ham co owner David Sullivan
The central defender completed a move to the Eagles on Tuesday afternoon, with Alan Pardew’s side paying £10 million for his services.
West Ham's James Tomkins applauds their fans at full time
The move brought about an end to a lifelong association with the Hammers, during which he made nearly 250 appearances in all competitions.
Because of that his move may have come as something of a surprise to West Ham fans, but Sullivan has explained that the player had requested a move if he wasn’t guaranteed first team football.
“We thank James for his contribution to the club and we know he is a fantastic player,” he told whufc.com.
“But it’s a position we had four players in plus two other players who can play at centre back. James made it clear that if he wasn't guaranteed first-team football he would consider a move, so it made sense to sell him for a decent price.”
West Ham's James Tomkins celebrates scoring their first goal with Elliot Lee
Tomkins will certainly be hoping that he can become a first team regular for Crystal Palace next season.
Given the price they have paid for him, it certainly seems likely that he will be, with the club surely keen to see him form a strong partnership with Scott Dann.
Palace only conceded 51 goals in the Premier League last season, but Alan Pardew will be hoping that his latest recruit can help to improve that record as they look to bounce back from the disappointment of last season.
Liverpool's Emre Can in action with West Ham's James Tomkins