Swansea winger Nathan Dyer will miss the rest of the season after rupturing the Achilles tendon in his left ankle during Sunday's Premier League match against Leicester.
Dyer played the first seven minutes against the Premier League champions before limping off, and a scan on Monday confirmed the extent of the injury.
The 29-year-old, who earned a Premier League winner's medal with the Foxes last season, will now need surgery, the Welsh club announced on their official website.
Dyer had featured heavily during Paul Clement's reign, making a total of five appearances having missed the earlier part of the domestic campaign with an ankle problem
His injury means Gylfi Sigurdsson, Wayne Routledge, and January signings Luciano Narsingh and Jordan Ayew, will provide options for Clement out wide.
Jefferson Montero is edging closer to a return to action with the Ecuador winger currently sidelined with a hamstring injury.
Dyer, who first arrived at the Liberty Stadium from Southampton in 2009, signed a new four-year contract with the club in the summer.
During his time with the Swans, Dyer has helped the Welsh club secure promotion to the Premier League and played an integral role in Swansea's Capital One Cup triumph over Bradford in 2013 - the first major trophy in the club's history.
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Swansea boss Paul Clement has revealed he tried to sign Frank Lampard before the former England star announced his retirement.
Clement - who worked with Lampard when he was Chelsea's assistant manager - said he tried to bring the 38-year-old back to south Wales following his appointment at the Liberty Stadium at the start of January.
"We had a chat. I think he appreciated that I called him because of our relationship," Clement said.
"I am not saying it got close in any way, but we had a conversation. It did not go very far, but it would have been nice. It would have been good.
''His ability as a player we all know about. But he is also a very good leader and character and a fantastic professional."
Lampard was sent out on loan to Swansea by West Ham in October 1995 when he was just 17 years of age, making 11 appearances.
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Leeds United have signed winger Mo Barrow on loan from Swansea City until the end of the season.
The Gambian previously worked under Leeds boss Garry Monk at the Liberty Stadium.