Mawson has been a rock at the back for the Welsh outfit and he would be a fantastic addition to West Ham’s back four.
The Welsh outfit have been atrocious this season and selling Mawson could be dangerous for them. The defender could still make a big difference in their fight for survival.
Swansea cannot afford to lose a player like him at this stage of the season but they know that the money from Mawson’s sale will help them improve multiple positions.
As per ESPN, West Ham are closing in on the transfer and are prepared to pay a fee in excess of £20m plus add-ons for him.
West Ham have improved a lot since the arrival of Moyes and players like Mawson could cement a top half finish for them this season.