Kevin Federline is close to signing a seven-figure deal to endorse a weight loss supplement created by fat-burning firm Extreme Physical Performance, RadarOnline reports.

The former back-up dancer has fought a long-running battle with his bulging belly, hitting headlines after piling on the pounds earlier this year. An insider claims Federline is eager to get in shape before starring in a new TV reality series, currently in pre-production.

Bauer-Griffin