Bentley, who was once dubbed the natural heir to David Beckham because of his ability to cross the ball, played for seven different professional clubs including Tottenham, where he moved for £15m in 2008
The former Arsenal trainee struggled to establish himself at White Hart Lane, however, and was sent on loan to Birmingham, West Ham, FC Rostov and Blackburn before being released last year
"I've fallen out of love with the game," Bentley told Sky Sports News.
"The game has changed a lot - when I first started playing it was more about enjoying it, y ou went into work every day and it was brilliant
"Now it's a little bit robotic - with the social media side of it and the money that has come into the game - I hate to say it but it's made it boring, it's made it predictable and a bit too calculated
"To sign on for another four or five years into that isn't really an option for me."
Bentley's 12-year career included seven caps for England.
Source : PA
Source: PA