Former Wales striker Iwan Roberts is worried about the imminent departure of Andre Ayew to West Ham United and fears his exit could collapse Swansea City, with the Premier League set to kick-start in two weeks.
Ayew, 26, is a subject of a £20 million bid from the Hammers after an explosive debut season in England.
Manager Slaven Bili? is pushing through a deal for the highly-rated versatile Ghanaian.
And former Wales striker and BBC Wales pundit Iwan Roberts says he is worried about potential sale of the Ghanaian and other top stars.
"If these rumours are true I would think Ashley's head would be turned at 31 to go and play for a big club - but for £10m he's irreplaceable," he said.
"You could see Ashley leaving and there's a big question mark over Ayew. I can't see Swansea turning £20m down when they got him on a free transfer.
"There's only two weeks to go - there's a lot of work to be done at Swansea City and I am worried for them."
The Hammers were offered Ayew on a free transfer last season, but opted against signing him, and he moved to Swansea instead.
Ayew, 26, scored 12 Premier League goals in his debut campaign in English football and is seen as the ready-made striker who can go straight in and make an impact at first-team level.