Mukherjee, however, said he did not want to be a political astrologer and comment on whether the Congress will do business with the Left parties again in the future.

"These four years, despite difference of perceptions and divergence of views we carried on. For the Left parties, I have sad feelings but no bitterness," he told a TV channel.

"We have no hard feelings, to be frank. I have no bitterness towards the Left leaders and Left leaders too have never attacked me personally," Mukherjee, the Government's chief negotiator with the Left on the nuclear deal, said.

Asked whether Congress will be open to do business with the Left parties after next elections, he said, "how can I say right now. Let us wait, how circumstances will unfold. Let us not predict and be political astrologers. I do not keep options open and do not keep options closed."

Asked what was Jyoti Basu's reaction when he met him after Left parties withdrew support to the UPA, the Minister said the Marxist veteran was ‘too bittered to express his feelings’.