Comcast prepares to bid on Fox in mid-June: Sources

• This time, an offer would include protections such as a reverse termination fee, sources tell CNBC.
• CNBC reported Monday that Comcast was preparing a $60 billion all-cash bid that would top one made by Walt Disney.
• Comcast could take on significant debt in a deal for the Fox assets, sources say.

A sign outside the 21st Century Fox headquarters in New York.

Scott Mlyn | CNBC

Comcast is preparing to make its bid for Twenty-First Century Fox's assets in mid-June, sources tell CNBC.

This time, a bid would include protections such as a reverse termination fee, the sources told CNBC.

CNBC reported Monday that Comcast was preparing a $60 billion all-cash bid that would top Walt Disney's deal to acquire the studio and production assets of Fox if the government approves AT&T's acquisition of Time Warner.

Comcast could take on significant debt in a deal, sources told CNBC on Tuesday, up to $100 billion.

But the sources also said Comcast CEO Brian Roberts and Disney CEO Bob Iger aren't communicating about resolving this bidding battle.

Disclosure: Comcast is the owner of NBCUniversal, parent company of CNBC and CNBC.com.