 Charles of Navarre entered into secret negotiations with Edward III at Clarendon Palace, but committed himself to very little.Simultaneously he continued to negotiate with Charles V, who feared the King of Navarre would throw in his lot with Knolles's army now operating in Northern France.Though Edward III sealed a draft treaty with Navarre on 2 December 1370 it was a dead letter after the destruction of Knolles's army at the Battle of Pontvallain a few days later.