Valletta secured the services of Malta international defender Ryan Camilleri as he signed a five-year deal.
A product of Pietà Hotspurs, Camilleri made his Premier League debut in season 2004/05. He was transferred to Hibernians in 2009. With the Paolites, he won two FA Trophies.
Camilleri made his national team debut in August 2012 in a friendly match against San Marino.
Ryan Camilleri is the third signing for the Citizens following the signing of goalkeeper Nicky Vella and Australian midfielder Adrian Zahra.