d himself out as a potential successor to BT's beleaguered chief executive, Sir Peter Bonfield. The highly regarded executive had been widely tipped as a possible candidate should Sir Peter leave BT before the end of his contract in December 2002.  <P>Mr Grabiner, who cashed in share options worth nearly &#163;9m in November 1999, said he would be taking some time off to consider what his next step should be.  <P>"I have always felt that if I could build Energis to proven success, I would consider doing som