Welsh legend John Hartson says Swansea City must do all they can to keep their star players.

The former Celtic and Arsenal striker says Swans should only sell for crazy money.

He wrote in the Western Mail: "In terms of players going out, the four who will attract the most attention will be Michel Vorm, Ashley Williams, Joe Allen and Scott Sinclair, but personally I think it would be crazy to let any of them go, even for big money.

"Unless someone is going to pay £20m for Vorm or Allen then I would not consider it because remaining in the Premier League is far more important for Swansea."