LONDON, Oct 31 (Reuters) - Mobile group Vodafone ( VOD )

and Romania-based operator Digi ( DGII ) said on Thursday they

had signed a memorandum of understanding with Hellenic

Telecommunications Organization to buy its subsidiary

Telekom Romania Mobile (TKRM).

Vodafone ( VOD ) said under the terms of the agreement it would buy

TKRM and a significant proportion of its assets and Digi ( DGII ) would

also buy some assets.

The British company said talks remained at an early stage

and there was no certainty that a deal would be agreed.