Palace determined to keep hold of England midfielder Chelsea close to deal for Chavarria from Rayo Vallecano Crystal Palace are closing in on the signing of the United States youth international Zavier Gozo as the new manager Pierre Sage attempts to strengthen his squad ahead of the new season. Gozo, a 19-year-old who plays for Real Salt Lake in MLS and has represented the US at various youth levels up to Under 23, is expected to complete an £11m move to south London after he was left out of hi…