In 1538, the king and Cromwell arranged with Lutheran princes to have detailed discussions on forming a political and religious alliance. Henry had been seeking a new embassy from the Schmalkaldic League since mid-1537. The Lutherans were delighted by this and they sent a joint delegation from various German cities, including a colleague of Martin Luther, Friedrich Myconius. The delegates arrived in England on 27 May 1538. After initial meetings with the king, Cromwell, and Cranmer, discussions on theological differences were transferred to Lambeth Palace under Cranmer's chairmanship. Progress on an agreement was slow partly due to Cromwell being too busy to help expedite the proceedings and partly due to the negotiating team on the English side, which was evenly balanced between conservatives and reformers. The talks dragged on with the Germans becoming weary despite the Archbishop's strenuous efforts. The negotiations were fatally neutralised by an appointee of the king. Cranmer's colleague, Edward Foxe, who sat on Henry's Privy Council, had died earlier in the year. The king chose as his replacement Cranmer's conservative rival, Cuthbert Tunstall, who was told to stay near Henry to give advice. On 5 August, when the German delegates sent a letter to the king regarding three items that particularly worried them (compulsory clerical celibacy, the withholding of the chalice from the laity, and the maintenance of private masses for the dead), Tunstall was able to intervene for the king and to influence the decision. The result was a thorough dismissal by the king of many of the Germans' chief concerns. Although Cranmer begged the Germans to continue with the negotiations using the argument "to consider the many thousands of souls in England" at stake, they left on 1 October having made no substantial achievements.