West Ham are weighing up a move for Swansea City midfielder Ki Sung-yueng as well as his teammate Alfie Mawson.
Ki is out of contract in the summer and is open to a move away. The 28-year-old has made 11 appearances this season and David Moyes sees him as a player who can help West Ham keep possession and screen his back four.
While West Ham have improved defensively under Moyes, their ability to break out of defence has been lacking, notably in their Carabao Cup quarter-final defeat to Arsenal this week.
Ki, who has 97 caps for South Korea, is technically good, has an eye for a pass and offers a threat from set-pieces.