In September, the Royalists in Ireland agreed a truce with the Catholic Confederation, allowing Ormond to transfer troops to England but cost Charles the support of many Irish Protestants, especially in Munster. At the same time, details emerged of the "Antrim scheme", an alleged plan to use 20,000 Irish troops to recapture Southern Scotland for Charles; although highly impractical, the Covenanter government ended negotiations with the Royalists. Shortly thereafter, they signed the Solemn League and Covenant, agreeing to provide Parliament military backing in return for subsidies, and discussions on creating a single, Presbyterian church.