Lomu has four days

Former All Blacks star Jonah Lomu has been given until Sunday night to decide whether he'll switch codes and join the Gold Coast Titans.

Titans managing director Michael Searle says the biggest hurdle to signing Lomu remains the 125kg winger's current world-wide endorsement deals which are based upon him playing rugby union. The 31-year-old Lomu was given a helicopter tour of the Gold Coast last week after meeting Searle and Titans coach John Cartwright.

It's believed he's been offered $100,000 to join the Titans on a one-year deal.