Sunderland have released Carlos Cuellar, Oscar Ustari and Keiren Westwood at the end of their contracts.
Sunderland have signed Argentinian goalkeeper Oscar Ustari on a six-month contract.
Javier Pastore and Oscar Ustari have returned to the Argentina squad to play Japan next month.
Getafe keeper Oscar Ustari looks set to miss most of the upcoming season after suffering a knee injury.
Getafe have announced that they are set to sell goalkeeper Oscar Ustari.
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