He added that the death toll on the Bosnian side during the Serbian offensive rose to 83, with 376 wounded.
The Bosnian side, which until now wanted to maintain a single unitary state, did not offer any public reaction to the plan.
The paramilitary groups, numbering several thousand men, have a reputation for being among the most resolute fighters on the Bosnian side of the war.
Officials have attributed some of the attacks to the Serbian forces, others to the Bosnian side.
Over the next two years, the countries that make up the United Nations ordered the peacekeeping soldiers to tilt more toward the Bosnian side.
"It was very clear that the fire came from the Bosnian side," he said.
"The Bosnian side has not agreed to this."
On another occasion, he suggested that he should be freed to fight on the Bosnian side.
The mediators hope this proposal will finally enable the Bosnian Muslim side to agree to the rest of the cease-fire terms.
The West and the Bosnian sides ruined any chance of restoring a single Bosnia, so the questions are two.