UPDATE 3-ICAP sees flat FY profits, LCH talks continue

* Consortium's LCH.Clearnet bid rejected last month-sources

* ICAP-led consortium may return with revised offer -source

* ICAP Q1 revenue up 10 pct on year, FY profit on track

* Shares down 3 pct at 430p, trade ex-dividend

(Adds sources on rejection of LCH.Clearnet offer, details)

By Daisy Ku and Steve Slater

LONDON, July 15 (Reuters) - Britain's ICAP Plc (IAP.L), the world's biggest interdealer broker, said it was on track to almost match last year's profit after a "solid" first quarter and remains in talks to buy clearing house LCH.Clearnet as part of a consortium.

The board of LCH.Clearnet last month rejected a bid for the clearing house from a 14-member consortium led by ICAP due to concerns about the details of the business plan, two people familiar with the matter said. [ID:nLF405964]

The consortium remains interested and is likely to return with a revised offer around September, one of the sources said. A spokesman for the consortium said it remained in talks with LCH.Clearnet, but declined to comment on specific details.