By Elvira Pollina MILAN (Reuters) -KKR remains interested in taking over Telecom Italia (TIM) and also wants to discuss the phone group’s own plans to combine its fixed line assets with those of state-backed rival Open Fiber, two sources said on Thursday. KKR submitted a non-binding 10.8 billion euro ($11.9 billion) takeover proposal for TIM in November, having already invested 1.8 billion euros for a 37.5% stake in the group’s last-mile fixed-line network last year. Italy’s largest telecoms company left the New York-based fund waiting for nearly four months without an answer before TIM’s boar…