Few of my friends who are currently working in GEO TV told me that GEO continuously trying to negotiate with PTI from last 6 - 7 months but PTI is not interested. Now Shakeel-ur-Rehman (owner the Geo Group) send his apology to Imran Khan with his core representative. According to GEO employees, GEO has lost 80% of viewership because of supporting PMLN Government on his every right and wrong even many people working under the GEO roof is against GEO policy and few of very important people already resigned from GEO.
According to my another friend who is very popular in Pakistan (celeb and working closely with GEO group) i can't mention his name for some reason, He told me few months back that GEO has some conflicts with the government as well. The reason is Government spend huge money on GEO against PTI Dharna campaign and all of the sudden Government stop all the payments and don't want GEO to stop the anti PTI campaign. In the case, GEO start fighting with the government over decided payments which were delayed by the government.
Now on-topic, even Hamid Mir and other top journalist contact Imran Khan directly and even heard they met with PTI committee. After some dialogue the issue is i think now resolve.