这是条转会/续约快讯。英文翻译： “COPE: Valencia’s contract renewal talks with Javi Guerra are progressing well; AC Milan, Atlético Madrid, and Manchester United are still monitoring him.”

需要我补充下背景（球员特点、现合同/违约金、这些俱乐部的适配度、潜在转会可能性）还是只要简短要点汇总？