Swansea's record signing Borja Baston will be prevented from making his debut against Hull on Saturday after being injured in training.
The £15.5 million arrival from Atletico Madrid missed the opening-day 1-0 Premier League victory at Burnley last weekend as the game came only two days after he joined Swansea.
Borja, as he is known, was given extra time to build up his fitness ahead of playing some part at the Liberty Stadium this weekend.
But the 23-year-old will not be fit for Hull's Premier League visit after suffering a leg muscle injury.
"Borja's problem is a little one but he is not available,'' Swansea manager Francesco Guidolin said at his prematch news conference.