Hammers have two bids knocked back
According to the usually reliable Wales Online the defender and Poland goalkeeper are expected to leave but the Swans board consider the Hammers bids below their valuation.
Mawson, 24, has two years left on his deal and is currently recovering from knee surgery whilst the player of last season, Fabianski, has a year remaining on his deal.
And the former Arsenal keeper is believed to have told Swansea he wants to leave for a top club and is currently away on international duty with Poland ahead of their World Cup campaign.
West Ham were reported to be ready to offer £25 million for Mawson in January, and the defender has since been called up to an England senior squad for the first time.