The Sharks confirmed their place in the quarter-finals of the competition on Sunday despite an eight-wicket defeat to Surrey Lions at Arundel, as results elsewhere went their way. Victory over the Eagles though will confirm a home quarter-final tie for the defending champions.
They are now second in the South Group table and need to finish in the top two places to confirm a match at Hove in the next phase of the competition.
Sussex can welcome back skipper Michael Yardy and Luke Wright to the squad following their involvement with the England one-day international squad. Essex can boast a hard-hitting line-up with England stars Ravi Bopara, Alastair Cook, and James Foster, as well as the big-hitting New Zealander Scott Styris.
Tickets are still available for the clash but a sell-out crowd is expected at Hove and advanced bookings are advised. Call 0844 264 0206 to reserve your tickets or log on to www.sussexcricket.co.uk
The match can also be followed at www.sussexcricket.co.uk
The squad is as follows: WAT Beer, jS Gatting, MW Goodwin, CB Keegan, RJ Kirtley, RSC Martin-Jenkins, CD Nash, MJ Prior (wkt), OP Rayner, DR Smith, MA Thornely, L Wright, M Yardy (C), Yasir Arafat