Saudi British Bank (SABB) is planning to sell a riyal-denominated sukuk that will boost its capital reserves, with an announcement set to be made as early as next week. The issue will boost SABB's Tier 2, or supplementary, capital and will be arranged by HSBC's Saudi Arabian unit. The sukuk could be worth 1.5 billion riyals ($400 million) and will have a 10-year lifespan but a clause that will allow the bank to redeem the issue at the end of the fifth year. Riyad Bank announced plans to issue a 4 billion riyal bond to boost its capital base earlier this week. It will have the same 10-year, non-call five, structure that SABB is planning to offer.