William Gallas officially joins Glory PERTH, AUSTRALIA - NOVEMBER 11: New Perth Glory A-League recruit William Gallas poses with his playing top at a press conference at Cape Lamberts Gold offices on November 11, 2013 in Perth, Australia. (Photo by Paul Kane/Getty Images) Picture: Getty Images Source: Getty Images FORMER French international William Gallas will be officially unveiled as Perth Glory's international marquee today. Gallas, who agreed to join the A-League club last month on a deal believed to be worth $700,000, arrived in Perth on Saturday night and underwent a medical on Sunday. The 36-year-old will sign on the dotted line on Monday and is expected to feature in Saturday's clash with Adelaide at nib Stadium. Gallas enjoyed a distinguished career in the English Premier League, playing for Arsenal, Chelsea and Tottenham. The star defender also played in two World Cups for France among 84 international caps. His arrival means one of Michael Thwaite or Steve Pantelidis will be forced out from their usual position in the Glory defence. Glory coach Alistair Edwards says he will explore the option of using either Thwaite or Pantelidis in the midfield. Gallas won back-to-back Premier League titles with Chelsea, and says he wants to help Perth Glory win the A-League title this season. Glory, who drew 1-1 with Wellington Phoenix in New Zealand on Saturday, sit fourth on the table.