Luke Williams says Swansea City's defensive duo Ben Cabango and Harry Darling are still racing to be fit for Saturday's South Wales derby with Cardiff City.

The pair have been a key part of Swansea's plans this season, and had started every league game this season until Cabango picked up a groin injury in the defeat to Portsmouth at Fratton Park on New Year's Day.

Darling is similarly an injury concern ahead of the trip to the capital, with Cyrus Christie and Kyle Naughton taking his and Cabango's place in a makeshift centre-back pairing during the 3-0 FA Cup defeat to Southampton at the weekend.

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Williams says both players are desperate to play at Cardiff City Stadium, but admits he's not yet sure if either player will be available, and says he has no concerns over Swansea's options beyond the duo. Sign up to our Swansea City newsletter here.

"Ben was able to get out on the grass today, so that's better," Williams said. "He couldn't do all of training but we got him out on the grass and we're happy with that.

"We can do as much as possible, but there's a limit. Harry wasn't able to train today but I'm optimistic he'll be able to train at some point this week before the game.

"We want them on the pitch on Saturday and they want to be on the pitch.

"I want them. But it won't be a concern because we have a couple of different options."

Josh Ginnelly came off the bench at St Mary's for his first appearance in 16 months, having recovered from a ruptured Achilles, and could well feature, although Williams says the winger's minutes will need to be carefully managed, with youngster Sam Parker falling into a similar bracket following his recovery from a hamstring injury.

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"Josh is okay, but it did take a lot out of him because it's been a long time and he's a very high energy player," Williams added. "Very explosive, so we've got to be extra careful with him.

"Sam Parker's trained very well and is in a good place, but again we have to be careful because he suffered a setback. He's a young player and we need to be extra careful with him."

Kristian Pedersen remains out after undergoing surgery on a hamstring injury, while Ollie Cooper is making good progress in his recovery from a stress fracture in his foot.

"Ollie warmed up today and then went off and did some work with the conditioning team," Williams said. "He warmed up, which was nice because he can have that interaction with his team-mates. That was really pleasing to see because we know what he can bring to the squad."