Aston Villa central defender Richard Dunne will be sidelined for up to two months with a fractured right clavicle (shoulder), the club have confirmed.
Dunne suffered the injury in Sunday's home clash with Premier League leaders Manchester City after falling heavily when challenging England goalkeeper Joe Hart for a cross and will undergo surgery in Birmingham on Monday.
A club statement confirmed: "Richard Dunne sustained a fracture to his right clavicle in the game against Manchester City.
"He will undergo an operation in Birmingham. It is anticipated that he will be sidelined for up to eight weeks."
Team-mate Chris Herd returned to full training on Monday having recovered from an ankle ligament injury which has left him sidelined since December.
He will be available for the game against Wigan on February 25.