He suffered a sprained ankle in their loss to West Ham.
Jack Cork will be unavailable for Swansea's trip to Watford tomorrow.
He suffered a sprained his ankle in their loss against West Ham last weekend.
Boss Paul Clement said: "He's not going to be fit for this weekend which is disappointing, Jack has played a lot of games since I've been here.
"He's been a regular part of the starting 11."
The boys are remain in the relegation zone - sat 18th in the Premier League table.
The manager said the next few games will be crucial for their survival in the top flight: "It's a really important game for us again. Clearly we're disappointed to come off the back of 5 games and we've only picked up one point.
"I think against Hull, Bourmouth and West Ham, particularly, we were disappointing. I think it's the worst we played since I've been at the club.
"We showed at the start of this year that we're able to pick up a lot of valuable points in a short amount period of time. We've shown in the last 5 games that we've not been able to pick up a lot of points in a short time and now we have 6 games where we have to pick up points."