Swansea are expected to be without club-captain Angel Rangel for up-to six weeks after he went under the knife to remedy a persistent groin problem.
Swansea City, who have already lost regular right back Kyle Naughton to suspension, are likely to be without veteran backup Angel Rangel this weekend, as the latter is coping with a calf injury.
Paul Clement revealed during Swansea City's press conference ahead of this weekend's clash with Sunderland that both Angel Rangel and Jefferson Montero could find a place in the squad.
Injury was added to insult in Swansea City's 2-1 weekend loss to Hull City with a trio of starters limping off.
Tuesday proved to be one of the most memorable days in recent memory for Swansea City fans with a win and a new coach.
Angel Rangel has signed a one-year contract extension with Swansea City that will see the full back staying until the summer of 2018.
Kyle Naughton, who missed Week 8 due to the birth of his daughter, was available for selection for Week 9, but veteran Angel Rangel got the start again at right back.
Neil Taylor is one yellow card away from a suspension that will see him miss two games and likely open the door for Angel Rangel who lost his place to Kyle Naughton.
Angel Rangel, a steady figure at right back for Swansea City since 2007, appears to have finally fallen out of favor to winter signing Kyle Naughton.
On a day when they were clearly not their best, Swansea City still managed to earn a point on the road despite going down to 10 men for the final ten minutes in a 0-0 stalemate with Sunderland.
Angel Rangel picked up a knock during Swansea City's defeat of Aston Villa, forcing him to exit the game early.
Angel Rangel will continue to be sidelined for another two to three weeks for Swansea City, according to an update by their official website.
Angel Rangel limped off near the end of Swansea City's match with Valencia, getting treatment on the sideline until the final whistle with an apparent calf injury.