Carlos Carvalhal is looking to add more personnel before the transfer window slams shut.
Two wins in their last two league games against Liverpool and Arsenal might have lifted Swansea out of the relegation zone, but that has not given them a false sense of security.
The main reason the Swans have had such a bad start to the season was a terrible summer transfer window and they are attempting to right that mistake with no less than three signings on deadline day.
Betting has been suspended on Andre Ayew linking up with his brother in the Swansea frontline. Andre has been left out of the West Ham squad tonight and looks like he may be rejoining his ex-club for a fee believed to be in the region of £18 million.
The bookies have King has a 1/2 shot to leave the Foxes after twelve long years, implying a 66.7% probability the Welshman will make the move.
Meanwhile Swansea are also odds-on to rescue Markovic from his Liverpool hell, as short as 1/2 with one bookmaker with even money available elsewhere.
Another plus is Alfie Mawson - who has a goal and assist in his last two PL matches - looks set to stay after being as short as 6/4 to join the Hammers earlier in the window.
Oddschecker spokesman, George Elek: 'January has been a fantastic month for Swansea on the pitch, and they will be hoping that continues until the 11pm deadline today. Andrew Ayew looks set to sign, whilst Lazar Markovic will add some much needed pace. Keeping hold of Mawson could still be the best business they do all month'