Inter Milan forward Alexis Sanchez may require ankle surgery, the Serie A club have said.
The on-loan Manchester United man suffered an ankle injury during a clash with Juan Cuadrado in Chile's friendly with Colombia.
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There were initial fears Sanchez could face a long spell on the sidelines and that prospect has not been ruled out following initial tests.
"Alexis Sanchez underwent medical tests earlier this morning at the Humanitas Institute in Rozzano.