The 32-year-old could be another high-profile name to turnout for S.League side Brunei DPMM FC in 2014
Jeffers is currently on a season-long contract with League Two side Accrington Stanley, having had short-term spells at Newcstle United Jets in the A-League, Motherwell and Floriana of the Maltese League, following his departure from Sheffield Wednesday in 2010.
A product of the Everton youth system, he made his first team debut for the Toffees at the age of 16 and a promising start to his senior career caught the interest of Arsenal, who signed him in a £8million deal. Failure to live up to his early promise saw Jeffers move on to Charlton Athletic and Blackburn Rovers.
The 32-year-old has one England cap, scoring on his debut against Australia in 2003, and with 13 goals, is still the joint leading scorer with Alan Shearer for the England U21s.
Jeffers will be joined at his DPMM trial by former Malaga defender Daniel Orozco Alvarez. The 26-year-old centreback is a free agent and was last at Hungarian side Lombard-Papa TFC after a three-year spell with Asteras Tripoli FC of Greece.